bing tracking image
  1. Trailer Bearings Races Seals Caps
  2. etrailer
  3. Bearings
  4. Standard Bearings
  5. Bearing Kits
  6. 6000 lbs Axle
Bearing Kit, 15123/ 25580 Bearings, 10-36 Seal

Bearing Kit, 15123/ 25580 Bearings, 10-36 Seal

Item # BK3-100
Our Price: $31.37
You Save: 31%
Trailer Bearings Races Seals Caps
Orders above $99 qualify for Free Shipping
Shipping Weight: 1.84 lbs
In Stock
etrailer Race 25520 and 15245 Trailer Bearings Races Seals Caps - BK3-100
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Need help with installation?
Locate installers near me
Great Prices for the best trailer bearings races seals caps from etrailer. Bearing Kit, 15123/ 25580 Bearings, 10-36 Seal part number BK3-100 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (220)
  • Q & A (0)
  • Videos (2)
  • Photos
  • Why etrailer?

etrailer Trailer Bearings Races Seals Caps - BK3-100

  • Bearings
  • Standard Bearings
  • Bearing Kits
  • 6000 lbs Axle
  • Bearing 15123 and 25580
  • etrailer
  • Race 25520 and 15245

Trailer Axle Bearing Kit

Outer Bearing
Inner Bearing
Seal I.D.
Bearing Kit Includes:
  • One Inner Bearing and Race
  • One Outer Bearing and Race
  • Grease Seal
  • Cotter Pin

BK3-100 Bearing Kit, 15123/ 25580 Bearings, 10-36 Seal

Video of Bearing Kit, 15123/ 25580 Bearings, 10-36 Seal

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Trailer Bearings Races Seals and Caps Rebuild

Speaker 1: Today we're going to take you through the rebuild process on a couple of hubs. We've got an idler hub, and here we've got a hub and drum assembly. Works with electric rigs, but this can also work for just standard discs, if you've got a disc brake style setup.Basically what we're going to show you is how to get all of the bearings out. How to remove the seal. How to remove the race's if they're damaged, then get them replaced in the proper manner. We'll show you how to use an easy loop hub, which we have here.The first thing we are going to need to do is, get the grease cap off the end.

It can have either a rubber plug in it like this one does, or it can be a solid metal cap.These are pressed fit in there, basically by tapping on them on the back side. To remove them, a deadbolt hammer is typically what we're going to use. We're just going to start tapping as we go around. You'll see a little separation start right here, and slowly it'll work it's way off.Now the next step's going to vary a little bit depending on your axle setup. Do you see this is going to have a keeper that goes around the nut.

And that prevents that from being backed off, or removed. A lot of times you'll have a castle nut, which will have just little tabs that stick off, and there will be a cotter pin that passes through it. Just depending on your application, you need to get the keeper for the nut off. This style we just kind of pry out. A cotter pin you would just remove of course.Once we have that off ...

We'll start to take off the nut here, and the washer that's in behind it. Now yours should look a whole lot more dirty than this. There should be a lot of grease packed in, and through the hub, this one's brand new. We thought it'd be nice to show you the components before the grease was on .. Of our washer that comes off.And then here we're going to have our outer bearing.

Continue to pull that. We're gonig to have our inner bearing here. That sits in the backside of the hub. And we didn't put it in yet, we will show you how to put it in. But a seal would typically be covering the backside here. We'll show you how to use a seal removal tool, or another tool. To get that pried up and out. To get an access to that inner bearing.Now for a drum style like this, that process for disassembly is going to be just the same. One thing to keep in mind if you're using a disc brake setup. You'll have to remove the caliper before the disc is going to come off.Now once we have the spindle exposed, as we said this is going to be really greasy. We want to get all the grease removed, and the first thing we'll do is inspect it. We want to make sure that it looks just like what we have here. Everything's nice and smooth. We don't see any kind of discoloration, or any marring on the metal. Indicating that our bearing's got hot.If you do have any of those symptoms, at this point it's time to replace those bearings. You don't want to repack them. Get new bearings, and put in there. You might have a bearing that's come apart in here. Another surface to ensure is in good condition, is where your seal is going to go. That helps seal all the grease inside of our hub. With a damaged or broken seal, that grease is going to seep out. Either out of the hub, or in this case into our brake assembly.Now if your axle has brakes, we're also going to check the disc. Make sure it doesn't have any issues, or your hub. And this is going to be a hub and drum assembly. The brakes are going to ride on this machine surface. You're going to check that for signs of excessive heat, discoloration, or cracking. And this is our magnet surface. We'll check that surface for the same issues.Now inside the hub regardless if it's a disc brake, it's a drum brake like this. Or just a standard idler style hub. You're going to have an outer race. Would be right here, it's a small tapered piece of metal your bearing sits in, and rotates on. That's basically the outer portion of the bearing.You have the same thing here on the backside. This is called the inner race. Now if those show any signs of wear, overheating, or cracking. Those are also something we'll need to replace, which we'll show you how to do in just a minute.Now, with your brake assembly exposed, if you do have electric brakes like we have here. It's a good idea to check all the components for wear, cracking, maybe missing pieces. Check your pad thickness to make sure those are in good shape. Basically if you have a non working brake assembly and you put everything back together, you're just going to have to take it apart and do it all over again to get back to the brake assembly. This gives you a really good option to be able to change them out.And most applications are going to use a four, or maybe a five bolt flange to hold them in place. And you'll just remove the lock nuts, or sometimes you'll have a hex nut with a lock washer. You want to remove those, and then simply slide your assembly off after you cut the wiring.The friction material itself should also be checked for any kinds of cracking, or overheating. If you have any grease inside the system at all, it's likely it's gotten on those pads. It's a good idea to get those changed. Now as far as the removal of the races go, it's going to be just the same whether we're using an idler style hub like we have here. A drum brake like we have here. You can basically see where the idler is, here in the middle of the hub. It's going to go all the way around there, and we just have this extra material here to provide our braking surface.Now if you're doing a disc brake style job again, it's going to be just the same here with the races living inside of the actual hub portion. You'll just have the discs there for the brakes to make contact. We're going to use this little bit smaller one, it's a little bit easier to manage to show you how to get these out. We've talked about where the races are. The outer here, the inner being closer to the inside, but on the backside of the race there's a little lip. That lip's meant to stick out just a little bit further than the hub, and provide us an area to put our tool on, and help to drive that out.If you look all the way through there on that inner race, you'll see that little lip that sticks out just from the hub slightly, and it gives us enough area to use our tool on. Now generally to remove these you're going to use a punch, similar to this. Some guys will use a screwdriver. Or a piece of pipe. If you have a piece of pipe that's small enough to fit inside of that diameter, you can take that down through and allow it to rest on that lip.Use our punch, and then just need a hammer. And we'll start working that out. We're going to tap all the way around. Kind of equally, and evenly apply the force to get it to come on out of the bottom for us.You can see now as it starts to come out there's going to be a little gap created between the hub and the race. And we can just keep going, bringing it on out. Then you can inspect the inside of the hub surface there. Make sure no damage or anything has occurred, and repeat that same process for the outer race if you plan on removing and replacing that one.Now in the outer flat edge, you can see we're going to have our tapered edge on this side. If we roll our race over to the flat side, typically there's going to be a manufacturers part number on there. That will help you identify which race it is, that you need to go back in your system. If those are rubbed off, worn off, if you can't read them. You can measure the outside, to outside diameter of the race here. It's a good idea to use a micrometer to get it exact.Now here's your basic micrometer. And again, the outside of the race is what we're going to need to measure. You want to go . I set the thickest point there. Looks like this one's going to be about 1.98. That's going to be the measurement you'll want to supply.Now while we've got this out, let's also look at the proper way to measure our bearing. Instead of the outside for the bearing, we need to measure the inside diameter. That's going to be pretty simple. Let's pull that out, find the largest measurement we can. Which here, looks like it's going to be 1.03. With that information, we'll be able to get the correct bearing, and the correct race, so they'll fit together properly and make a full bearing kit for us.Now here's the race, we're going to show you how to get this put back in. Basically just going to press fit inside of our hubs. We need to get it down on there. Kind of like that. And you'll have a couple options. A lot of times you're going to see do it yourself or at homer, just going to use a wooden block. Just place it on there. That's going to get you started, but at that point you'll struggle in getting it to go all the way down into it's seat.Now to take care of that problem, there are several seal drivers that are available. Seal and race drivers that are available out there on the market. It's designed to fit down inside of our race, inside of our hub and get it down there where it needs to go. This is part number ptw83020, has several different sizes, even if you have multiple trailers it's going to do the job.Now the side with the angle on it, is designed to fit down inside of our race. If we use the other side, that's going to be for driving your seal into place. Just want to hold it, and take it on in with your hammer. You'll see, you just want to insure that our race is all the way up against that line on the hub where it's supposed to mate to.Now when it comes time to pack your bearings you're going to have several different ways of doing this. You can just use your hand, is the traditional method. That's going to be the method probably reserved for the very occasional trailer work kind of situation. If you do it once or twice a year, probably get away with it that way.Next you would go to a, kind of a sandwich funnel style almost. If you look inside of there, you can see the bearing. It's located between the two pieces. Just use a grease gun. Start filling that with grease, and that's going to fill our bearing for us. And the third, with this one you're just going to place your bearing down and in. It should be pretty close to center. And then we've got our cone her that's going to go down and secure that.Now I think this style, wastes a little bit more grease than what this style will. This has a dust cap. You can see, you can keep your grease in there, put your dust cap on there and save it for later use. This will be if your going to do it every couple years. And this particular style would be if you're a more regular user.Let's start by showing you how to use a bearing packer. Similar to this. Again, we've just got our grease inaudible 00:11:07 here on the top. And then just slowly start to fill it. Now I like this style quite a bit. I think even regular users might enjoy it, because you can get a really quick visual look at that bearing. You're not going to have to overdo it, or have to much grease.You can kind of see in there now, we're starting to get grease to come out of it. Couple more pumps, we'll be good. You can see we've got grease coming out all the way around. Where all of our bearings are. Got a little bit of excess there. Just take that around the outside of it. And then we should be able to lift it off. And now you can see what we we're talking about. Just a little bit of excess there, that you're just going to wind up wasting.Now we'll take our bearing, we're going to place it right down in our race. And then we'll cap off the back with our seal. Right now our seal's going to fit in just like our race did. It's going to have a little bit of a pressure fit to it. Now very often in this situation, I see people using the four by four method. Kind of here, just placing that on and tapping it. As an option though, if you do have one of these. You can see that's designed to fit right on the top of the seal. And help drive it in.The biggest thing here is, just going to be getting it driven in squarely. You can see, this side's in a little bit further than this side. I'm going to start this side first. Now since we didn't have the opportunity to show you before, we're going to take a look at pulling a seal. Now this is a seal puller, we carry this on our website part number ptw1219. This is meant to hook underneath the seal. And then you kind of pull up on it, and just like our race you'll have to work all the way around that edge. Just bringing it out a little at a time.If you don't have that available. Another option would be a screwdriver. You just kind of get that under the seal, and turn it. And see, that'll allow you to also pop that out. We've taken care of our race. Our inner bearing. Our seal. The last component, before we put our hub back in place is going to be our outer bearing. Now with this bearing, I'll show you the hand packing method.This is definitely . Slightly dirtier method than the bearing packer. When we get grease on our hand we want to look at the larger side of the bearing. This is the smaller side. We have a larger side In between the inside and outside there's a gap. We can see our rollers in there. We want to grab that, and use that gap and shove grease inside of it. Now this is going to take a little bit, you want to work in the same spot until you get the grease pushed all the way through. We can see on the top there we've got a little bit starting to come through.And once we push it in the bottom, and you see it start coming out the of the top in those little drips, it's going to indicate that, that section's fully packed. Just need to work all the way around their outside edge now and do the same thing. Alright, once that's all the way around . The bearing will be ready for use.Now one more thing I like to do. We can see our inner bearing there, and our outer bearing. Well between the two, got a pretty big gap in there. If you'll take a . Pretty good amount of grease. We're just going to go all the way around. See how we can go all the way around the inside and just line that really well. The more grease we have in here, the less chance we have of any moisture getting in there, which can cause corrosion, rust, pitting. Pretty much things we do not like when it comes to bearings, races, and hubs.Put plenty of grease in there. And then this one does have the easy lube spindle, that'll even fill it in more. Now we can get our assembly slid on. I like to keep my thumbs on that outer bearing, just to prevent it from . inaudible 00:15:28 pushed off there. Now we can put on the original hardware that we removed, in taking off our hub the first time. In our case, we had our washer and our nut.Now most commonly you'll see pliers similar to this being used. We basically want to get that tightened down. Once it's fully tightened down you'll feel some resistance in the hub. We back it off just slightly. That'll give us a little bit more freedom of motion there. Something you don't want however . Is any movement in, or out on your hub. You want to be sure that everything is compressed, and you don't have what's called end play. Which would be the play in and out.Once we've got that set, then you'll put on whatever tight keeper yours came with. Get that put back in place. Now with an easy lube style hub, you're going to place your grease gun on the end, and then you can just fill the remainder of that hub up.Now for your typical applications, you're either going to have a solid cap, or a cap that'll have a rubber plug in it. A solid cap's going to be for an axle without the grease inaudible 00:16:51 here on the end. Goes on there. Just knock it on with your rubber mallet. Same with the one with the plug. Just gives you a removable area there, be able to cap that off.We'll show you how to put that on. Now as alternatives as well, a lot of times on boat trailers and marine kind of situations. You'll see a bearing buddy. This is going to apply a little bit of pressure on the grease, you'll fill it up. This kind of comes out just a little bit. That applies constant pressure on the grease to make sure we don't have any air, or anything like that. Then there is also an oil bath hub available. Now this is going to be for use with seals that are going to be designed specifically for oil bath use. You'll have to change that seal.We're using a double lip seal. There are also single lip seals available. Of course a double lip seal is going to give you just a little additional security. Keep that in mind when you order. But let's get this knocked on there now so you can see how that works. We just want to take the cap, we're going to center it. This is going to be very similar to what we did with the seal. And then just gently start tapping it around the outside. And it'll seep down on there for you.It's really going to be the same thing that you'll do with any of the end caps. Now with this side done, it's a good idea to take care of all the other hubs. Get them all on the same maintenance schedule. And as long as you'll periodically check the grease, take your trailer out for a trip occasionally. Just to keep everything lubricated. It should extend the life of these parts, and give us years of good service.

Customer Satisfaction Score:

Customer Reviews

Bearing Kit, 15123/ 25580 Bearings, 10-36 Seal - BK3-100

Average Customer Rating:  4.8 out of 5 stars   (220 Customer Reviews)


Great bearings and seals
Installed perfectly
and have about 6000 miles on work trailer and everything is smooth and no leaks


You have great products except for the bearing packer- which didn’t work!

Shawnee is an excellent service rep! She was very courteous and knowledgeable! Thank you for all your help! .


I have bought before from etrailer and again they offer a good price and excellent service. Still a happy camper.


Everything from the order through installation was as expected. I will order from etrailer again.


good quality bearings that are still in good shape on my boat trailer after a year of use. With proper grease and assembly, it is what I would expect.


Service was great. Packaging of bearings very poor, they were all thrown in a bag and shipped loose in the bag. During shipping some of the races and roller bearings were scratched and i had to buy some bearing and race at the local parts house.

I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 02/04/2022


Everything you need to replace the bearings on axle. Purchase was easy to figure out what I needed and package showed up timely. Price was super competitive. What I spent to do one hub alongside the freeway was more than doing the other three using etrailer axle bearing kits.

Still working great
Rusty - 11/20/2021


Need to change invoice layout if you want to wholesale to repair shops. Invoices need to contain product codes. You should not expect customers to have to relook up part numbers for invoices.


Was unsure about the size but with your detail description was able to select the correct size. Thanks so much!

Great, installed quickly and working great
Eric - 12/01/2020


Perfect fit for my new torsion axels and Kodiak Stainless Steel Hubs! The service and follow up from etrailer has been great.


Exactly what I needed. Great customer service and fast shipping


Bearings are good quality. Only three stars because they advertised shipping as 6 days but my order took 6 days for their warehouse to even initially ship it out.


They worked well and were easy to put o n.


No issues with the product itself. Would of been 5 star if the packing process was quicker and the product was packed better. There was some slight damage due to poor packing.


Needed bearings for my boat trailer. The previous owner had saved all receipts for bearings and brakes he ordered from etrailer so it was super easy to order my parts. very pleased with the service.


Very pleased! Very quick delivery. Bearing kit appeared identical to the bearing I purchased from Dexter at about 50%their price.Nice job people. Couldn't be happier!

Just got back from trip to Grand Canyon about 5600 miles. No problems. Thanks for keeping me on the road!
John S - 08/25/2015


Easy to find the parts that I needed and fast shipping.


very fast delivery


I have been a customer of etrailer for many years, always fair pricing, fast shipping, quality products, and a outstanding tech support group.

Well been 1 year, about 40k miles, just repacked the bearings, still in great shape, replaced seals during repack but all of them were still well sealed, have had great luck with etrailer on every item I have bought over the last 15 years, they are the go to place for everything towing.
Dennis D - 03/08/2021


One Year Follow-Up - This was an extremely simple and cost effective option to repair my trailer brakes. One side had been contaminated by a leaky grease seal, but I replaced the brake assemblies, seals, bearings, and races on both sides of my single axle fresh water boat trailer at the same time. I estimate about 3000 miles on this trailer since installed and everything is still working great.


So far, so good.


I was ready to order a bearing kit since both bearing numbers matched up and the kit included a Seal plus the Spindle Washer. I was unable to locate a number on the seal so when I called to order I was lucky to have Sandy take my order... she knows her stuff. Sure she could of just took my order and gave me what I asked for but she wasn't comfortable not having a seal number and had me go measure it. As I was doing this I located a set of very small numbers on the rubber lip of the seal. I gave her the numbers off the seal and she was able to cross reference it and discovered it was not the same seal for the kit I was about to order. She found the correct kit had the bearings and seal as an exact replacement. Only "issue" we both thought odd was as a kit it didn't include the Spindle Washer where the other kit did. Not a big deal I just ordered the washers too.


Bought new bearing kit as a spare for the road in case old ones cease. New kit in great shape no rust. Ordering them was easy no problems. Etrailer expert advice was very useful to make me buy this kit. Packed bearings with grease and vacuum sealed entire kit and storing it on RV.


Good fit seem quality, time will tell.


Met my expectations. Excellent on-line order system from locating products to checking out and payment. Good prices, quick shipping, excellent shipped tracking software of orders, and fast delivery. Shipping package is adequate. Received items are of high quality. Very good experience.

Show More Reviews

See what our Experts say about this etrailer Trailer Bearings Races Seals Caps

  • How To Determine The Correct Bearings, Races, and Seals For 12 x 2 Drum on 5,200-Lb Axle
    To determine the correct parts for your 12 x 2 drum on a 5,200-lb axle, you will have to remove the hub from the trailer and either get part numbers from the inner and outer bearing, and grease seal or measure the spindle in 3 places and the hub in two places. I have included a photo showing the places to look for part numbers and places to measure if part numbers are not visible on your bearings and seal. If you need to measure, a dial or digital caliper will be needed to get accurate...
    view full answer...
    Image 1 for
  • Availability of Bearing Kit with Bearings 25580 and 15123
    Are you positive that the bearing number you have is 15126? That is not a standard bearing number and based on the other bearing you have it sounds like you would need the part # BK3-100. If the inner diameter of the 15126 is 1.250 and the matching race is number 15245 then you do have the 15123 and the # BK3-100 would be the correct kit.
    view full answer...
    Image 1 for
  • Replacement Bearings/Seals/Races for Dexter P-29 7K Axle
    After quite a bit of searching, I wasn't able to determine which bearings, races and seals were included with the hubs used on your Dexter Axles. You did a great job of providing me with lots of information, which makes my life easier but in this case I couldn't find anything. You'll need to pull one of your hubs, and get the reference numbers from the inner and outer bearing, from which we can determine which races and seals are needed. If you can't make out the reference numbers, you'd...
    view full answer...
    Image 1 for
  • Replacement Wheel Bearings, Races and Seals for a 2010 Jerry James Flat Bed Trailer
    To determine the correct parts for your 2010 flat bed Jerry James double-axle trailer with electric brakes, you will have to remove the hub from the trailer and either get part numbers from the inner and outer bearing, and grease seal or measure the spindle in 3 places and the hub in two places. I have included a photo showing the places to look for part numbers and places to measure. If the part numbers are not visible on your bearings and seal a dial or digital caliper will be needed...
    view full answer...
    Image 1 for
  • Recommended Bearing Seal Kit For 2000 Four Winns Trailer
    The 10-36 seal that is included in the # BK3-100 kit will work great on your trailer. This kit comes with the inner bearing and race, outer bearing and race, grease seal and a cotter pin.
    view full answer...
  • Will Bearing Kit BK3-100 Replace Lippert Kit 333950
    Bearing Kit # BK3-100 consists of bearings 15123 and 25580, matching races, grease seal and cotter pin. This kit is intended for a 6K axle. The same component parts are found in Lippert bearing kit 333950, also rated for a 6K axle. Two helpful articles concerning bearings are linked for your reference.
    view full answer...
  • Replacement Bearing Kit For Dexter 6,000 lb Axle
    We have the bearing kit part # BK3-100 that is designed for Dexter 6k trailer axles like yours. This comes with new bearings and a seal. I attached an install video that shows a trailer hub getting rebuilt for you to check out as well.
    view full answer...
  • Replacement Bearing and Seal Kit for Dexter 6k Trailer Axle
    The correct bearing kit for a Dexter 6k trailer axle would be the part # BK3-100 which comes with the correct bearings and seal you are needing. Most of the numbers you mentioned are just serial numbers and capacities but the HF=87 inch is the distance between hub faces and the SC=68.5 is the distance between the spring seats. This is info that is needed if you ever were to have to replace that axle.
    view full answer...
  • Bearing Kit with 15123 and 25580 Bearings for a 2006 Four Winns Boat Trailer
    There are a couple of options that having bearings 15123 and 25580 (the other numbers are the associated races). We have # BK3-100 which includes seal 10-36 which has an inner diameter of 2.250 Inches and outer diameter of 3.376 inches. And we have # BK3-110 which comes with a tang washer and seal GS-2125DL which has an inner diameter of 2.125 inches and outer diameter of 3.376 inches. I have linked videos of both sets for you so you can see all of the included parts.
    view full answer...
  • Replacement Bearing Recommendation for Dexter 6,000 lb Axles
    We have two bearing kits that could fit for your Dexter 6,000 lb axles. The difference is the seal size. The part # BK3-100 is the kit that has the correct bearings and a seal with an inner diameter of 2.25 inches. This is most likely what you need. The other options is the part # BK3-110 which has a grease seal with an inner diameter of 2.125 inches. You would need to measure the outer diameter of the spindle your seal rides on to determine which kit you'd need.
    view full answer...
    Image 1 for
  • Bearing Kit Recommendation for 6k Lippert Trailer Axles
    We have two bearing kits that would possible work for a Lippert 6k axle. The part # BK3-100 has bearings 15123 and 25580 plus seal 10-36. This would be the kit for if your spindle has a bearing surface that is 2.250 inches. If instead your seal surface is 2.125 inches you would need the part # BK3-110. We don't carry Timken bearings which aren't commonly seen on trailer hubs.
    view full answer...
  • Trailer Bearing Kit to Replace a 15123 Outer bearing, 25580 Inner Bearing and 2.125 Inch Seal
    Based on the seal measurement, it sounds as if the best fit is going to be the Bearing Kit, 15123/25580 Bearings,10-10 Seal, # BK3-110. The seal that is included in this bearing kit measures 2.125 (2-1/8) inches. The inner and outer bearing numbers remain the same as the BK3-100 kit you have referenced. You want to be certain to get the correct kit to avoid potential problems down the road. I recommend taking a look at the other set of bearings/seals on the other hub to double check, if...
    view full answer...
  • What Size Bearings are Kits Available For?
    The best way to find out what kit you need is to find the bearing numbers which should be stamped on the bearing themselves. You will also need to know the grease seal, whose inner and outer diameter you will need to measure with a digital caliper to the thousandths of a decimal point. The weight capacity of your axle would be another telling point to find the correct bearing kit for you. That said, I have broken down our kits based on sizes as you requested. Bearing kit # BK1-100 is for...
    view full answer...
  • Bearing Kit Recommendation for Lippert 6k and 7k Axles
    For a Lippert 6k axle you have two options. The part # BK3-100 and the part # BK3-110. The difference would be the size of the inner diameter of the grease seal. The part # BK3-100 comes with seal that has inner diameter of 2.25 inches and the part # BK3-110 comes with seal that is 2.125 inches. For a 7k axle by Lippert you would want the part # BK3-200 if the seal diameter needed is 2.25 inches or part # BK3-210 for inner diameter of 2.125 inches.
    view full answer...
  • Which Cotter Pin Is Needed for BK3-100 and BK3-200 for 6000-lbs and 7000-lbs Axles
    The size of the cotter pin is going to vary depending on the spindle of each axle. The cotter pin used in the bearing kits we have available for the axle/spindle that you mentioned is the Cotter Pin - 1/8" Thick x 1-3/4" Long # 165649, and while those are not sold in bulk, you can purchase as many as you'd like to keep on hand via the product page. In regards to the maintenance kits, it's not exactly what you've mentioned but we do offer bearing kits for each of these axles that come...
    view full answer...
  • Hub Recommendation for an Old Mobile Home Axle
    It sounds like you have found the correct hub and drum assembly. The Trailer Hub and Drum # 42656 that you referenced recommends inner bearing 25580 and outer bearing 15123 which are the exact measurements you gave. Also, this hub has a 12 inch diameter and a 2 inch depth like what you said you needed. For the correct bearing and seal kit you would want a Bearing Kit # BK3-100. I attached a video on cleaning and replacing hubs and bearings for you to check out also.
    view full answer...
  • Replacement Bearing Kit for Load Rite Trailer with 12 Inch Kodiak Disc Brake Rotors
    The Kodiak 12 inch 6 bolt hub and rotor assemblies we offer would use the # BK3-100 bearing kit. Each kit includes one # 25580 inner bearing, one # 15123 outer bearing, one 10-36 grease seal and a cotter pin. To determine if these are the correct bearings for your application, you will need to pull one of your hub/rotors off and look for the numbers on your inner and outer bearings. The number should be located on the flat, back side of the bearings.
    view full answer...
  • Correct Replacement Bearings for Boat Trailer with Oil Lubrication Hubs
    I do have options for you but we can't look up bearings for any one specific trailer, you'll need to find the axle tag and or pull apart the hubs and find the bearing numbers. Please note, most of our bearings can be used with oil or grease, the seal is what determines oil or grease compatibility. The Bearing Kit part # BK3-100 is designed for 5,200-7,000 lb axles and you can use the Oil Seal part # 9103309 for oil lubrication compatibility.
    view full answer...
  • Bearing Kit For Dexter 6,000lb Axles On 2020 Grand Design Reflection 320MKS
    The bearing kit # BK3-210 that you mentioned is specifically for 7,000lb axles. For your 2020 Grand Design Reflection 320MKS fifth wheel with Dexter 6,000lb axles, the correct bearing kit will be either # BK3-100 or # BK3-110. # BK3-100 uses a seal with an ID of 2.250", whereas the # BK3-110 uses a seal with an ID of 2.125". You may need to measure your seal using a tool such as the 4" Carbon Fiber Digital Caliper # PTW80157 in order to correctly match up your bearing kit. I have included...
    view full answer...
  • Bearing Kit Availability for a Hub with Outer Bearing of 15123
    Most likely you would need either the part # BK3-100 or the # BK3-110. Both of these kits use the 15123 as an outer bearing and a 25580 as an inner bearing. Here's what you will need to do to determine which kit would potentially fit. Measure your spindle where the inner bearing and grease seal ride. The bearing area diameter should be 1.750 and if the grease seal area is 2.250 then you would want the part # BK3-100 or if it is 2.125 you would want the part # BK3-110.
    view full answer...
    Image 1 for
  • Replacement Hub Bearing Kit For a 1980's Cradle Right Boat Trailer
    We do have 2 different bearing kits available for you with those bearing and races that you are needing. They will include both inner and outer bearings, and races but there are 2 different grease seals that are commonly used with your axle spindle. The Bearing Kit # BK3-100 includes a 10-36 grease seal which will fit a 2.250" diameter spindle. The Bearing Kit # BK3-110 includes a GS-2125DL grease seal which fits a 2.125" diameter spindle. If you can not find this information on your...
    view full answer...
    Image 1 for
  • Wheel Bearings for 6,000 lb Trailer Axle
    The bearings we offer are from TruRyde, and the most typical bearings for a 6,000 lb axle are # 25580 for the inner bearing and # 15123 for the outer bearing. These also come in a kit depending on the inner diameter of your grease seal; the Bearing Kit # BK3-100 comes with these bearings, their races and a grease seal with a 2.250" inner diameter. Bearing Kit # BK3-110 has the bearings and races with a grease seal that has a 2.125" inner diameter. I have added a link to a help article...
    view full answer...
  • Bearing Kit for Dexter 6,000 Pound Axle
    The correct bearing kit for your 6,000 lb Dexter axle is either the # BK3-100 or # BK3-110. The difference between the two is the grease seal. The # BK3-100 uses a seal with an ID of 2.250", and the # BK3-110 uses a seal with an ID of 2.125". You will need to look for the part number on your current grease seal or measure the inner diameter using a digital caliper like the # PTW80157 to find out which is correct. See the diagram below for where to measure.
    view full answer...
    Image 1 for
  • Availability of Trailer Bearings 15123 and 25580 for 2007 Wildcat Camper
    Bearings # 25580 and # 15123 are a common combination for hubs on 5200- to 7000-lb axles. The linked page displays hubs that fit this bearing set. We offer both of these bearings individually as well as parts of kit # BK3-100 which also includes a cotter pin and grease seal.
    view full answer...

< Previous
123. . .4

Do you have a question about this Trailer Bearings Races Seals Cap?

  • Why

    At we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer bearings races seals cap information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Patrick B
Expert Research:
Patrick B
Employee Michael H
Expert Research:
Michael H
Employee Jeff D
Expert Research:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Chris R
Video Edited:
Chris R
Employee Alexander C
Updated by:
Alexander C

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.