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  1. Trailer Hubs and Drums
  2. Dexter
  3. 5 on 4-1/2 Inch
  4. For 3500 lbs Axles
  5. Hub with Integrated Drum
  6. 13 Inch Wheel
  7. 14 Inch Wheel
  8. 14-1/2 Inch Wheel
  9. 15 Inch Wheel
Dexter Trailer Hub and Drum Assembly for 3,500-lb Axles - 5 on 4-1/2 - Galvanized

Dexter Trailer Hub and Drum Assembly for 3,500-lb Axles - 5 on 4-1/2 - Galvanized

Item # 8-247-50UC3
Our Price: $166.79
Trailer Hubs and Drums
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Galvanized hub-and-drum assembly is great for marine use. Fits 3,500-lb with #84 spindles. Inner bearing (L68149) and race, outer bearing (L44649) and race, grease seal, grease cap, wheel bolts, and lug nuts included. Great Prices for the best trailer hubs and drums from Dexter. Dexter Trailer Hub and Drum Assembly for 3,500-lb Axles - 5 on 4-1/2 - Galvanized part number 8-247-50UC3 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (20)
  • Q & A (0)
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Dexter Trailer Hubs and Drums - 8-247-50UC3

  • 5 on 4-1/2 Inch
  • For 3500 lbs Axles
  • Hub with Integrated Drum
  • 13 Inch Wheel
  • 14 Inch Wheel
  • 14-1/2 Inch Wheel
  • 15 Inch Wheel
  • Standard
  • L44649
  • L68149
  • 1/2 Inch Stud
  • Dexter

Galvanized hub-and-drum assembly is great for marine use. Fits 3,500-lb with #84 spindles. Inner bearing (L68149) and race, outer bearing (L44649) and race, grease seal, grease cap, wheel bolts, and lug nuts included.


  • Marine-grade trailer hub-and-drum provides surface area for brake shoes to grip when brake is activated
    • Includes bearings, races, grease seal, grease cap, and zinc-coated lug nuts
  • Zinc plating has a 500-hour salt spray rating
    • Ideal for use on a boat or snowmobile trailer
    • Durable enough for saltwater applications
  • Hub and drum are made in the USA


  • Application: 3,500-lb axles with #84 spindles
  • Wheel size: 13" to 15"
  • Drum dimensions: 10" diameter x 2-1/4" wide
    • Works with 10" x 2-1/4" electric and hydraulic brake assemblies
  • Bolt pattern: 5 on 4-1/2"
  • Grease cap flange diameter: 1.98"
  • Wheel bolt dimensions: 1/2" diameter x 2-1/4" long
  • Weight capacity: 1,750 lbs
  • Quantity: 1 hub and drum assembly

Bearing, Race, and Seal Information

  • Bearings (included)
    • Inner bearing: L68149 (1.378" inner diameter)
    • Outer bearing: L44649 (1.063" inner diameter)
  • Races (included)
    • Inner race: L68111
    • Outer race: L44610
  • Grease seal (included): 58846
    • Inner diameter: 1.719"
    • Outer diameter: 2.565"

Corrosion Resistance for Marine Use

This trailer hub-and-drum assembly has a zinc coating that resists corrosion, making it ideal for use on your boat or snowmobile trailer. All GAL-DEX hubs and drums undergo a test in which they are sprayed with a 5-percent salt solution to determine corrosion resistance over time. These products are able to withstand 500 hours of constant exposure to the saltwater mist. This 500-hour salt spray rating indicates that a product is not only durable enough to last in freshwater environments, but it can also be used on trailers that come into contact with saltwater.

Determining the Bolt Pattern

The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.

Bolt Pattern - Even

On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: "8 on 6-1/2" means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)

Bolt Pattern - Odd

To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: "5 on 4-1/2" means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)

Bolt Pattern Side

Measuring the distance (D) from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"

008-247-95 Dexter GAL-DEX Trailer Hub and Drum Assembly for 3.5K Axle with Hardware - 5 on 4-1/2

Replaces 8-247-50UC3

Customer Satisfaction Score:

Customer Reviews

Dexter Trailer Hub and Drum Assembly for 3,500-lb Axles - 5 on 4-1/2 - Galvanized - 8-247-50UC3

Average Customer Rating:  4.7 out of 5 stars   (20 Customer Reviews)

Galvanized hub-and-drum assembly is great for marine use. Fits 3,500-lb with #84 spindles. Inner bearing (L68149) and race, outer bearing (L44649) and race, grease seal, grease cap, wheel bolts, and lug nuts included.


Shipping was pretty fast and packaging nice and secure. The drums and brake backing assembly were a breeze to install without instructions. I was a bit surprised though that the back kit did not come with 4 new bolts to secure onto the flange. I used the old ones. The drum kit comes with new lug nuts though. I have no real complaints, I would definitely use etrailer again. Excellent pricing and quality. I installed these brakes the next day after receiving them. I used marine grease from autozone to pack the new bearings. The brakes are bled and adjusted as per the sticker on the kit...adjust til you cannot turn by hand and 10 clicks out. All that's left is to test drive it.


Cheap junk. One of the hubs was not properly coated. Will not recommend this to anybody. Cheap junk from China. Photos will be attached.


We had a break down on Saturday when we picked our boat up from storage. Went online and ordered the necessary parts to repair the trailer and forgot about it for a couple hours. Etrailer called to notify us that the selected parts would not arrive as hoped based on the shipping I had chosen. They went out of their way to locate the suitable parts and verify that they would arrive by the time I needed them so we could get the trailer repaired and back on the road. Thank you Etrailer for the excellent customer service!!! I look forward to my next order with you!


Stripping down a 16 year old 21 ft. salt water use trailer - from end to end. The folks @ etrailer were very knowledgeable, and helpful in my decision making. From placing the order, to tracking the order, to the way the items were packed for transit. Other distributors could learn from these people; in regards to customer service, following up, both office and warehouse. Unloaded the products last night, nothing short, all quality in regards to their products, with great pricing. The installation videos are a big bonus, and something I'll be taking advantage of, during the restoration. Will follow up with picture, (before and after) when I'm done


Everything purchased worked exactly as expected and continues to do the job I needed of them. I have and will continue to purchase all my trailer products from E-Trailer...

Lon M.


still working great and as advertised


I'm just getting around to installing
my drums, thanks for promptly getting them to me, they look great!

I'm wondering if this product has the free backing feature or if I need to manually lock out the brakes when backing up. Any information is appreciated.


Bought the galvanized drum brakes for a 6000# boat trailer used strictly in salt water. With rinse off after use they seem to be holding up pretty good.


I used these on my salt water boat trailer. The product works very well and have stood up to the salt water quite well.
I am happy with the results and ease of use.


I would highly recommend etrailer if they have what you need. These people really care about filling your order properly and followup with anything you order from them. They assume nothing!

This is a class AAA business to do business with.


Excellent resources to help determine the exact parts I needed for my trailer project. Great product descriptions and videos. Competive prices and quick shipping! Thank you very much!


Perfect replacement for my old worn out Hub/Drum. I went with the galvanized becasue of use in saltwater.

Thanks E-Trailer.


So far so good! Wish it would have come with new castle nut and washer. Fast delivery!


As always... just what I ordered in a timely fashion.


great price and the berring races came installed, saved me time. hopefully they can hold up to salt water


High quality and very easy to install!


Thanks. Great service and prices.


Great product and great service


Excellent again




See what our Experts say about this Dexter Trailer Hubs and Drums

  • Replacement Drum or Disc Brake Components for 3,500 lb Trailer Axle
    If you can verify that you have 3,500 lb trailer axles then yes the parts you mentioned would be correct for you. The brake assemblies # AKUBRK-35-D are correct, the hardware kit part # BRKH10B would attach them to your spindles, and then for a hub/drum you'd need the # 8-247-50UC3 and you'd be set. Do go to a disc brake setup you would also be needing to replace the actuator/coupler that you have now as it would require a higher PSI rating. The kit you'd want for just the brake components...
    view full answer...
  • Replacement Wheel Studs for Dexter Trailer Hub 8-247
    The replacement wheel studs you need for hub part # 8-247-50UC3 would be part # 7-262.
    view full answer...
  • Never Adjust Brake Assemblies for Dexter Trailer Hub 8-247-50UC3 Which Fits 3,500 lb Axles
    The Dexter hub part # 8-247-50UC3 is for 3,500 lb trailer axles which the brake assemblies part # 23-468-469 are the correct fit for.
    view full answer...
  • Replacement Hydraulic Drum Brake Assembly Recommendation to Replace Rusty Assemblies
    For the price of replacement brake pads and shoes it's almost always a better solution to go ahead and just replace the entire brake assembly. And in your situation with the current condition of your assemblies I would strongly recommend you do that based on how much rust is there. In order to pick out assemblies you need to know the diameter of the assemblies and the width of the brake brake pads. I can tell by the pics you have the standard 4 bolt mounting flange. The most common brake...
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  • How To Add 10 Inch Surge Brakes To a 2,500 Lb Trailer Axle On a Boat Trailer
    Yes, the Brake Actuator part # T43397007K will be sufficient to power two sets of the Titan Hydraulic Brake Kit part # T4423500-400 and the Dexter Trailer Hub and Drum Assembly part # 8-247-50UC3 will work with these as well as the spindles on your trailer if what you provided is correct. The weight capacity for the actuator is for the coupler portion, not the master cylinder so you could use braking assemblies that exceed this without issue.
    view full answer...
  • Are There Galvanized Trailer Hub/Drums for Travel Trailers
    We do have galvanized trailer hub/drums available for travel trailers. For example we have the part # 8-247-50UC3 which fits the very popular 3,500 lb trailer axles and has a 5 on 4-1/2 inch bolt pattern. If you have a different need for a hub/drum let me know and I'll see what we have that would be best option.
    view full answer...
  • How to Measure Trailer Hub Drum for Dimensions
    You can refer to the linked photo that shows how to measure both the diameter and depth of a boat trailer hub/drum. When selecting new hubs there are several characteristics you need to match up to ensure compatibility. Those are weight rating (to match the axle), wheel bolt pattern and the bearing set used in the hub. A new hub has to use the same inner and outer bearings in order for it to fit on your spindles and you want to ensure the bolt pattern for your wheels matches the new hub....
    view full answer...
    Image 1 for
  • Will 3,500 lb Dexter Hub/Drum Fit 3,500 lb Axle that Had Oil Bath Setup
    Yes, the Dexter hub/drum part # 8-247-50UC3 does fit your 3,500 lb axle spindle and will work great. It doesn't require anything beyond install of the hub and packing with grease to convert to a grease hub also. The best grease is the Lubrimatic LMX Red Grease part # L11390.
    view full answer...
  • Hub Assembly Recommendation for Ranger Trail Boat Trailer
    I have attached a link to all of our trailer hubs that use # L68149 and # L44649 bearings and have a 5 on 4-1/2 bolt pattern. I recommend the Dexter Trailer Hub Assembly # 8-247-50UC3-EZ. This hub features a grease cap that is compatible with EZ lube spindles that have a grease fitting out the end of the spindle. The galvanized hub is ideal for marine use, and will be durable enough for both freshwater and marine environments. This assembly comes with bearings, races, and a grease seal....
    view full answer...
  • Dexter Hub 8-248 Bearing and Seal Replacement Recomendations
    I am surprised you have a # 10-40 hub seal. The Trailer Hub and Drum Assembly # 8-247-50UC3 that you said you have would take a part # 58846 seal or # RG06-020. And then for bearing part # L68149 for the inner bearing, part # L44649 as outer bearing. For races part # L68111 for inner, and # L44610 for outer. If you do have different bearings than what I listed you don't have to order the bearings all as a kit. You could piece together all the parts you need by ordering them individually.
    view full answer...
  • Can Hydraulic Brake Kit AKFBBRK-35-D Mount With Hydraulic Connector on Side
    Since the bolt hole pattern is square with the bolt holes equidistant, the Hydraulic Brake Kit - Uni-Servo - Free Backing - Dacromet - 10" - Left/Right Hand - 3,500 lbs # AKFBBRK-35-D can be mounted so that the hydraulic connector is on the side if you like as the flange won't interfere. In regards to the distance from hub face to flange with the Dexter Trailer Hub and Drum Assembly for 3,500-lb Axles - 5 on 4-1/2 - Galvanized # 8-247-50UC3 and Brake Kit # AKFBBRK-35-D, without having...
    view full answer...
  • Replacement Brake Assemblies and Hub/Drums for Dexter 3,500 lb Trailer Axle
    The brake assemblies part # 23-468-469 is the correct kit for 3,500 Dexter axles that you have so that's the correct place to start. For a new hub/drum that comes with all new bearings and seals we have the part # 8-247-50UC3 which is also galvanized which will resist corrosion as well.
    view full answer...
  • Can Electric Brakes be Added to a 5 by 10 foot Utility Trailer
    Yes they can, if you check out the link I attached you will see a page that has a guide on how to add electric drum brakes to a trailer. Basically you are going to need to know what spindle you have on your trailer so that you can determine what brake drum/hub would fit it and then build it from there.
    view full answer...
  • What Would Cause Wheel Studs of Dexter Hub 8-247 to Sheer Off
    Sometimes with all the studs of a hub sheer off it's because one lug nut started to come loose which then caused others to work loose and with enough play the impact on the stud as the wheel turns eventually sheers off the stud. The replacement wheel studs you need for hub part # 8-247-50UC3 would be part # 7-262.
    view full answer...
  • Inspecting Hubs, Bearings and Spindles on a Boat Trailer
    Thank you for the measurements you provided, they are very helpful and tell us everything we need to know to recommend parts that will work for you. Based on your bearing numbers and spindle measurements you need a 3,500 lb hub with a 5 on 4-1/2 bolt pattern. The type of hub that you need will depend on whether you have brakes or want a galvanized versus a painted finish. For idler hubs (no brakes), you can use part # 84545BX or # 84545UC1-EZ for EZ Lube spindles. These hubs come with...
    view full answer...
  • Shorter Wheel Stud Recommendation for a Trailer Hub 8-247-50UC3
    The wheel studs of the hub part # 8-247-50UC3 are 1/2 inch diameter x 2-1/4 inches long. For studs that are around 1/2 inch shorter than that you would want the # K12WB169 which is 1/2 inch diameter and 1.70 inches long.
    view full answer...
  • Replacement For 3,500 lb Dexter Hydraulic Brakes 23-312 & 23-313
    Hey Tom, Really appreciate that info, and the hub you are referring to is the 3,500 lb Dexter Trailer Hub and Drum Assembly # 8-247-50UC3. We do have the 023-313-00 brake assembly that fits it, which is the right hand (passenger side) Dexter Hydraulic Drum Brake Assembly # 23-313. If you want to replace both brakes it is the Dexter Hydraulic Trailer Brake Kit # 23-312-313. Then for the grease cap bearing kit that fit your hub you'll need Grease Cap # F001518 and Hub Bearing Kit # BK2-100.
    view full answer...
  • Are Dexter Hubs 8-24 and 8-249 the Same
    Hey Mike, yes because both hubs are for 3,500 lb axles. That said we don't carry the 8-247 so best option would be the # 8-247-50UC3 or any of the other hubs at the attached link on this page.
    view full answer...
  • Replacement Bearings, Races, Grease Seal and Hub For a 2007 EZ Loader Customs Boat Trailer
    Your hub on your 2007 EZ Loader Custom trailer uses a unique size Grease Seal # 168255TB (inner diameter 1.687"). We do not have any bearing or hub kits that will have all the correct parts for your hub. Here is a list off the parts you would need to build your own bearing kit. Inner Bearing # L68149 Inner Race # L68111 Outer Bearing # L44649 Outer Race # L44610 Grease Seal # 168255TB If you would like to replace the hub that will already have the correct bearing races already installed,...
    view full answer...
  • Triton Trailer Spindle Size Hub is a Dexter 8-247
    The hub you have similar to the Dexter Trailer Hub and Drum Assembly for 3,500-lb Axles part # 8-247-50UC3 uses the #84 spindle like the Square #84 Spindle for 3,500-lb Trailer Axles part # TRU47FR. It will use the Bearing Kit for #84 Spindle part # BK2-100. This includes everything you need to replace you bearings if that's what you're after. I have linked a replacement video below for you to check out.
    view full answer...
  • Recommended Hub/Drum Assembly for Salt Water Boat Trailer with 3500-lb Axle
    Galvanized metal parts are definitely better if your application is salt water use. We do offer a galvanized hub/drum assembly in the 3500-lb axle rating and with the 5-on-4-1/2 bolt pattern you need. Hub/drum kit # 8-247-50UC3 includes the bearings (L68149 and L44649), races, grease seal, grease cap, and zinc-coated lug nuts. A review video is linked for you.
    view full answer...
  • Recommended Galvanized Trailer Hub Drum Assembly for 3500 lb Boat Trailer
    For your boat trailer with 3500 lb axle, I recommend the Trailer Hub and Drum Assembly - Galvanized # 8-247-50UC3 is ideal for your boat trailer application. This assembly will work well with hydraulic brakes and your 13 inch wheel.
    view full answer...
  • How to Pick Out Replacement Hubs for a Boat Trailer
    In order to pick out the correct hub assembly for a trailer you are going to need know a few key pieces of information. The first thing you will need to know is the bolt pattern of your hubs. Since the figure you came up with doesn't match any of the 5-bolt bolt patterns I am going to need to to recheck your bolt pattern. For further info on this check out the FAQ article I attached on this. Next thing you will need to know is what spindle you have on your trailer. In order to do that...
    view full answer...
    Image 1 for Image 2 for
  • Brake Assembly for Use with Dexter Galvanized Trailer Hub and Drum # 8-247-50UC3
    Since your boat and trailer will be used in salt water a galvanized hub/drum is a good idea to give you some corrosion protection. With this hub you can use Demco Galvanized Free Backing Hydraulic Drum Brake Assembly # 40716 (left) and # 40715 (right). These are suitable for a 3500-lb axle and a 4-on-4-inch brake flange mounting pattern. I have linked an installation video for your reference. Even when using galvanized components, it is a good idea to rinse the trailer with fresh water...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Lisa S
Written by:
Lisa S
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Hannah L
Updated by:
Hannah L

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