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  1. Trailer Hubs and Drums
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  3. 8 on 6-1/2 Inch
  4. For 9000 lbs Axles
  5. For 10000 lbs Axles
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Dexter Trailer Idler Hub Assembly for 9,000-lb to 10,000-lb Axles - 8 on 6-1/2 - Oil Bath

Dexter Trailer Idler Hub Assembly for 9,000-lb to 10,000-lb Axles - 8 on 6-1/2 - Oil Bath

Item # 8-288-3UC1
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Trailer Hubs and Drums
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Dexter Axle For 9000 lbs Axles,For 10000 lbs Axles Trailer Hubs and Drums - 8-288-3UC1
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Hub fits 9,000-lb to 10,000-lb general-duty Dexter axles made prior to July 2009. Inner bearing (387A) and race, outer bearing (25580) and race, oil seal, cap, wheel bolts, and lug nuts included. Oil bath system allows for easy maintenance. Lowest Prices for the best trailer hubs and drums from Dexter Axle. Dexter Trailer Idler Hub Assembly for 9,000-lb to 10,000-lb Axles - 8 on 6-1/2 - Oil Bath part number 8-288-3UC1 can be ordered online at etrailer.com or call 1-833-496-1390 for expert service.
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  • Reviews (8)
  • Q & A (0)
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Dexter Axle Trailer Hubs and Drums - 8-288-3UC1

  • 8 on 6-1/2 Inch
  • For 9000 lbs Axles
  • For 10000 lbs Axles
  • Hub
  • Standard
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • 25580
  • 387A
  • Dexter Axle

Hub fits 9,000-lb to 10,000-lb general-duty Dexter axles made prior to July 2009. Inner bearing (387A) and race, outer bearing (25580) and race, oil seal, cap, wheel bolts, and lug nuts included. Oil bath system allows for easy maintenance.


Features:

  • Trailer hub assembly fits idler axles
  • Oil bath lets you check lubricant level without disassembling the hub
    • Look through clear oil cap to check lubrication
  • Bearings, races, oil seal, oil cap, wheel bolts, and lug nuts are included
  • Sturdy iron construction
  • Hub and drum are made in the USA


Specs:

  • Application: 9,000-lb and 10,000-lb axles manufactured before July 2009
  • Bolt pattern: 8 on 6-1/2"
  • Pilot hole diameter: 4-3/4"
  • Wheel bolt diameter: 5/8"
  • Weight capacity: 5,000 lbs


Bearing, Race, and Seal Information

  • Bearings (included)
    • Inner bearing: 387A (2.250" inner diameter)
    • Outer bearing: 25580 (1.750" inner diameter)
  • Races (included)
    • Inner race: 382A
    • Outer race: 25520
  • Unitized oil seal (included): 10-51
    • Inner diameter: 2.875"
    • Outer diameter: 3.880"
  • Oil cap kit (included): RG04-270
    • 21-36 Cap
    • 10-50 O-ring
    • 46-32 Plug

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"


K08-288-91 Dexter Trailer Idler Hub Assembly - Old Style - 9,000 lb Axle made after October, 1989 and 10,000 lb General Duty Axle made through July 1, 2009 - 8 on 6-1/2 - Oil Bath

Replaces 8-288-3UC1






Customer Reviews

Dexter Trailer Idler Hub Assembly for 9,000-lb to 10,000-lb Axles - 8 on 6-1/2 - Oil Bath - 8-288-3UC1

Average Customer Rating:  4.8 out of 5 stars   (8 Customer Reviews)

Hub fits 9,000-lb to 10,000-lb general-duty Dexter axles made prior to July 2009. Inner bearing (387A) and race, outer bearing (25580) and race, oil seal, cap, wheel bolts, and lug nuts included. Oil bath system allows for easy maintenance.

by:

etrailer Troy is great he helped me get the parts i needed and was really concerned about helping. in this day and time thats rare to find someone so helpful. i will recommend Troy and etrailer to everyone. Bobby




by:

All their products are of good quality and the customer service is even better. Definitely will be buying from them again in the future.




by:

Great customer service




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by:

Product works well




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by:

Great parts great company to work with




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8
8

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



  • What is the Proper Way to Tighten the Nut on Your Axle
    To tighten the spindle nut on the end of your spindle, go ahead and put your Hub Assembly, like part # 8-288-3UC1, on your spindle. Tighten it down to about hand tight and then back it off about 1/4 of a turn. Backing it off helps to keep everything from tightening up on you and keeps it so that the spindle won't heat up too much from pressure.
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  • Rear Axle Hubs of Tandem Axle Gooseneck Trailer Running Hotter Than Front Hubs
    The difference in heat would lead one to believe that there is more friction on the rear # 8-288-3UC1 hubs that could be caused by some worn out bearings. Periodically inspecting these parts is never a bad idea and will help reduce the chances of a catastrophic malfunction. If your bearings are worn out or damaged this would generate heat that could be conducted to all connected metal parts, including your hubs and brakes. You can try pulling one of the rear hubs to check your grease level,...
    view full answer...
  • Will Oil Run out of Hub When Cap is Removed
    Yes, it is perfectly normal for the oil to pour out when removing the cap of an oil bath hub such as the Dexter Trailer Idler Hub Assembly - Oil Bath # 8-288-3UC1. If you take a look at the photo I added from the linked video showing the installation of an oil seal; the photo shows the removal of the cap and the oil coming out.
    view full answer...
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  • Do Oil Bath Trailer Hubs Require Grease Applied to Bearings
    You do not need to grease bearings that go into an oil-bath hub like the Dexter 10k hub part # 8-288-3UC1. Filling the hub with oil like you mentioned would be all that's needed.
    view full answer...
  • Availability of Trailer Hub that Has Capacity of 4 Tonnes
    4 tonnes equals 8,818 lbs so you'd want hubs that have at least a 9k capacity. We have the Dexter Trailer Hub part # 8-288-3UC1 which is designed for 9k and 10k Dexter axles which would work for you from a weight capacity point of view. The spindle on your trailer would have to be rated for this weight and would need to have the dimensions of the number 42 spindle which would have a seal diameter of 2.875 inch, inner bearing of 2.25 inch, and outer bearing diameter of 1.75 inch.
    view full answer...
  • Where to Find 10k Axle for Use with Dexter Hub # 8-288-3UC1
    We don't currently offer a 10k trailer axle at this time as our axle selection is somewhat limited. Best option will be to find a local trailer shop to you who can order you in custom axles based on the dimensions you need for use with the Dexter Trailer Idler Hub Assembly # 8-288-3UC1.
    view full answer...
  • Why Are My Oil Bath Hubs On A Ranger Boat Trailer Running Hot
    With what you have replaced, it can only be one or two things that is causing your issue. First will actually be the spindle. It may look good, but very minor imperfections can cause friction and may be what is going on. I would make sure the bearings are seating properly on the spindle and not "rocking" back and forth at all. I also highly recommend making sure the bearings are seating in the hub properly as well. If the races that the bearings sit in are a little off or if there is...
    view full answer...
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  • What Is the Proper Oil for Oil Bath Hubs on Trailer Axles?
    I recommend the Kodiak Synthetic Bearing Oil for Oil Bath Hubs - 8 oz Bottle # XLPROLUBE. It is a 90 weight synthetic oil. Dexter bought out Kodiak so this meets their specifications. I've also attached a photo of Dexter's recommended Oil Specs to assist.
    view full answer...
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  • Why Are There Different Brake Drums for 9,000 and 10,000 lb Axles After July 1, 2009?
    The Dexter Trailer Hub/Drum Assembly # 8-430-5UC3 is a one piece assembly, hub and drum together. It fits Dexter 9k and 10k general duty axles made after 07/01/2009. Hub # 8-288-3UC1 is a 2 piece for 9K axle (after 10/89) and 10K axle (through 7/1/09). It does not come with the drum or mounting bolts. Dexter changed their spindle diameters on these two capacity (9,000 and 10,000 lb) axles. The biggest difference was in the inner diameter of the seal needed.
    view full answer...
  • Availability of Just 10k Dexter Hub for Axle Made Prior to 2009
    For just a 10k Dexter hub for an axle made prior to July 2009 we have the part # 8-288-3UC1 which does not come with the drum. We don't have a version without bearings.
    view full answer...
  • Replacement Hub for 10k Dexter Drum with 9-44 Marking
    Your Dexter Trailer Brake Drum # 9-44-1 is designed to fit the Dexter Trailer Idler Hub Assembly # 8-288-3UC1. This drum and hub installs on 9,000-lb to 10,000-lb general-duty Dexter axles made prior to July 2009.
    view full answer...
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  • Do You Have Trailer Hub Assemblies Rated For 8,500 lb Capacity?
    We currently have two trailer hub assemblies that will work with that weight capacity. We have the Dexter Trailer Hub/Drum Assembly - Non-ABS Drum - 9,000 - 10,000-lb Axles - 8 on 6-1/2 - Oil Bath # 8-430-5UC3 and the Dexter Trailer Hub Assembly - 9,000-10,000-lb Axles - 8 on 6-1/2 - Oil Bath # 8-288-3UC1 which is an idler hub (no brakes). Both assemblies use the 2.250 inch inner diameter for inner bearing and 1.750 inch inner diameter for the outer bearing. The oil seal has an 2-7/8...
    view full answer...
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  • How to Determine Correct Replacement Hubs for Trailer
    To find correct replacement hubs for your Dexter trailer axle you will want to pull one of the existing ones so you can remove its inner and outer bearings. You need these bearing numbers to help you select a new hub that will fit on your axle's spindles. The new hubs must use the same set of bearings as the old ones. Please refer to the linked photo that shows how these numbers are typically stamped into the bearing housing. Once you know your bearing numbers all you need to do is click...
    view full answer...
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  • What Is The Difference Between The Dexter Oil Hub 008-430-03 & The Dexter Trailer Hub 8-288-3UC1?
    The only difference between the: -Dexter Trailer Idler Hub Assembly for 9,000-lb to 10,000-lb Axles # 8-288-3UC1, & the, -Dexter Axle Oil Hub for 9,000-lb - 10,000-lb General Duty Axles # 008-430-03, is that # 008-430-03 is the new style, and is designed to work with 9,000 LB & 10,000 LB General Duty Axles After April 2013. Whereas, the Dexter Trailer Idler Hub Assembly for 9,000-lb to 10,000-lb Axles # 8-288-3UC1 is the old style, and is designed to work with 9,000-lb axles made after...
    view full answer...
  • Can a 1-Piece 9K/10K Dexter Hub and Drum be Replaced with a 2-Piece 9K/10K Hub and Drum
    I spoke directly with my technical contact over at Dexter. Basically you cannot replace an 8-430 hub with an 8-288 hub due to differences in the spindles that each of those hubs fit. If your axle was made after July of 2009 then you will need to use # 8-430-5UC3. If it was made before July of 2009 you would instead use # 8-288-3UC1 with drum # 9-44-1 for non-ABS systems or # 9-44-3 for ABS systems.
    view full answer...
  • Replacement Hub and Drum Assembly for a Dexter 10K General Duty Axle 387A Inner and 25580 Outer
    We have exactly what you are looking for. If your axles were made before 07-01-2009, then you have the old style 2-piece hub and drums, so you will want the Complete Hub Assembly, # 8-288-3UC1. Keep in mind, this does not include the drum. If you also need the drum, then you will want part # 9-44-1 for a non-ABS drum or part # 9-44-3 for a drum with the ABS exciter ring installed and 8 drum mounting bolts, # 7-245. The hub assembly comes with the races already installed and it includes...
    view full answer...
  • Is Dexter Trailer Hub/Drum Assembly # 8-430-5UC3 a 1-Piece or 2-Piece Assembly
    Dexter Trailer Hub/Drum Assembly # 8-430-5UC3 is a one piece assembly, hub and drum together. It fits Dexter 9k and 10k general duty axles made after 07/01/2009. Hub # 8-288-3UC1 is a 2 piece for 9K axle (after 10/89) and 10K axle (through 7/1/09). It does not come with the drum or mounting bolts. For a non-ABS drum use # 9-44-1. For an ABS version use # 9-44-3. And for the mounting bolt use # 7-245 (quantities of 1).
    view full answer...
  • How To Determine The Correct Wheel Hub And Drum Assembly For Big Tex AC20 Car Hauler Trailer
    We do have some options that might work for you. To be certain of the right choice, you will need to know your bearing sizes and the manufacturing date of your axle. Details about your axle can be found on a sticker or plate that will be on your axle (see picture). If your Dexter axles were manufactured prior to July 2009 and your inner bearing is like Item # 387A and your outer bearing is like Item # 25580 then the Dexter Trailer Idler Hub Assembly, # 8-288-3UC1, will work for...
    view full answer...
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  • Replacement Hub and Rotor for 3,500 lb Axle of Trailstar Trailer
    I am sure we can help replace all of the brake components but without a brand I can't really help pin point just the hub/rotor. Instead the best we could do is a kit that replaces the hub rotors, the mounting bracket, and the calipers. So you could use the part # K2HR35D and have a replacement for both sides of your axle and you'd be set. This has the correct capacity of 3,500 lb and bolt pattern of 5 on 4-1/2 inch.
    view full answer...
    Image 1 for Image 2 for
  • Recommended Replacement Hub And Drum For 10,000-Lb Dexter Axle
    The hub assembly you need is part # 8-288-3UC1. This is the replacement hub for the Dexter old-style 2-piece hub and drums. This is designed for 10,000-lb axles, and includes the hub, bearings, races, seal, oil cap, wheel bolts, wheel retaining ring, and lug nuts. The drum that is designed to work with this is part # 9-44-1 for the non-ABS drum. If you need the ABS drum with exciter ring you will need part # 9-44-3. The mounting bolets are sold separately and they are part # 7-245....
    view full answer...
  • Replacement Brakes, Hubs and Drums For Dexter 10K General Duty Prior To July 2009 With 9-44 Drums
    Your Dexter Trailer Brake Drum # 9-44-1 is designed to fit the Dexter Trailer Idler Hub Assembly # 8-288-3UC1. This drum and hub installs on 9,000-lb to 10,000-lb general-duty Dexter axles made prior to July 2009. The hub assembly includes all the bearings, races, seal and oil cap for the one hub. You will need 2 hubs and 2 drums per axle and some Kodiak Synthetic Bearing Oil # XLPROLUBE to fill the hub. The Dexter Electric Brake Kit # 23-450-451 contains the brake assemblies for both...
    view full answer...
  • What Hub do Koidak Disc Brakes K2R1058D11 Fit
    The Kodiak Disc Brakes - 11" Rotor - 8 on 6-1/2 - Raw Finish - Leaf Spring - 10K Dexter and Lippert # K2R1058D11 are only designed to fit the Dexter Trailer Idler Hub Assembly for 9,000-lb to 10,000-lb Axles - 8 on 6-1/2 - Oil Bath # 8-288-3UC1. They are not designed to fit the other size hub, so thank you for pointing this out! I have added links to video reviews of both parts as well.
    view full answer...
  • Availability Of 13" Disc Brake Kit For 10,000LB Trailer Axles
    The Kodiak Disc Brakes # K2R1058D13 uses a 13" diameter rotor and fits on Dexter and Lippert 10,000lb axles. This kit will require mounting to a set of Idler Hubs like the Dexter Trailer Idler Hub Assembly # 8-288-3UC1.
    view full answer...
  • Disc Brake Kit to Fit Trailer with Trailer with 10k Axle Made Before 2009
    We have the Kodiak Disc Brake Kit # K2R1058D11HD which fits Lippert and Dexter axles made before 2009 like yours that have the 7 bolt mounting pattern for the brake flange to the bracket. The hub this normally fits is the part # 8-288-3UC1.
    view full answer...


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