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  1. Trailer Hubs and Drums
  2. Dexter
  3. 8 on 6-1/2 Inch
  4. For 9000 lbs Axles
  5. For 10000 lbs Axles
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
  8. 17 Inch Wheel
  9. 17-1/2 Inch Wheel
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
Retail:$787.72
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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. Great Prices for the best trailer hubs and drums from Dexter. 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 1-800-940-8924 for expert service.
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  • Reviews (14)
  • Q & A (0)
  • Photos

Dexter Trailer Hubs and Drums - 8-288-3UC1

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

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 Satisfaction Score:


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   (14 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.

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The right one



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Fit exactly how everything should. Very helpful when I called with a question got me back up and running.



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



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All went well with the shipping and installation. I would recommend etrailer for parts.



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Great customer service



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Product works well



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



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Great parts great company to work with



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14
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See what our Experts say about this Dexter Trailer Hubs and Drums

  • Availability of Spindle and Hubs for 10,000 lb Trailer Axle
    As you may have noticed, the highest capacity spindle we carry is for a 7,000 lb axle, # TRU37FR. Your best bet is to source the spindles for a 10,000 lb axle through a local trailer shop or dealer. If are able to source the spindles, we do have hubs for 10,000 lb axles. I'll list them below: # 8-430-5UC3 - Dexter Hub Drum for 9K to 10K axles manufactured after July 2009 (for non ABS brakes) - uses inner bearing # 387A, outer bearing # 25580 and oil seal # 10-51 # K08-288-90 - Dexter...
    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...
  • Parts Needed to Convert 10k Trailer Axles from Electric Brakes to Electric Over Hydraulic
    First thing you need to do is verify the axles that your trailer has. Hopefully they are a standard axle like a Dexter 10k which the # K2R1058D11 you referenced fits. This brake kit is designed to fit the trailer hub # 8-288-3UC1 which was found on 10k axles made before 2009. Then for a kit that comes with brake lines for a tandem axle trailer you'd want the # HBA16-252-82 and you'd be set. Your controller would need to be compatible with EOH brake like our P3 part # 90195 is.
    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...
  • 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...
  • Will Kodiak Disc Brake Kit for 10K Axles # K2HR958QD11 Fit a Lippert 10K Axle
    Your Lippert 10K axles require an inner bearing that is larger than what is included with the Kodiak disc brakes # K2HR958QD11. What you could do instead is use idler hub # 8-288-3UC1, if you do not already have idler hubs, and disc brake kit # K2R1058D11DAC.
    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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  • 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...
  • 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 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...
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  • Replacement Dexter 9,000 lb Idler Hubs
    You'll definitely need idler hubs to go to disc brakes, and while we don't have 9k disc brakes, we potentially have the hubs. This will depend on when your Dexter general duty axle was made, and the only thing we have are oil bath idler hubs. - Axles Manufactured After April 2013: Dexter Oil Hub for 9K to 10K General Duty Axles # 008-430-03 - Axles Manufactured Before July 2009: Dexter Trailer Idler Hub Assembly for 9,000-lb to 10,000-lb Axles - 8 on 6-1/2 - Oil Bath # 8-288-3UC1
    view full answer...
  • What Spindle Does Kodiak Disc Brake Kit # K2R1058D11HD Fit
    The disc brake kit part # K2R1058D11HD that you referenced was designed to fit on hubs for the 99 spindle like the part # 8-288-3UC1. The 99 hub like you mentioned does have bearing diameters of 2.25 inch as well as 1.75 inch so you are correct. The description does say it's a slip-on style disc brake kit which is a bit oversimplified like you mentioned since this does require the hub coming off to fit the brake flange on.
    view full answer...
  • Recommended Electric Over Hydraulic Trailer Brake Conversion for Dual 10K Axles
    The Disc Brake Kit # K2R1058D13 by Kodiak is the brake set that you will need to use for your 10,000 lb Dexter Torsion axles. When it comes to hardware, like the brake line, I recommend going with the HydraStar Hydraulic Brake Line Kit # HS496-252 which will wear better than other traditional brands. These lines are very flexible so the line is easy to maneuver under the trailer. The only downfall is that you cannot cut the line due to how hard and risky it is to do yourself. All you have...
    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...
  • What Is The Torque Spec For The 8-288-3UC1 Hub/Drum Assembly
    The Dexter Hub # 8-288-3UC1 has 5/8" wheel bolts. For 5/8 inch lug nuts torque them to 175 - 225 foot pounds.
    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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  • 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...
  • Replacement Hub Options For a Dexter D1012 With Bearings 387A and 25580
    Here is your options for a Dexter D1012 with the Inner Bearing # 387A, Inner Race # 382A, Outer Bearing # 25580, and Outer Race # 25520. Idler Hub Prior July 2009 # 8-288-3UC1 Idler Hub After April 2013 # 008-430-03 Hub/Drum Prior July 2009 # K08-288-90 Hub/Drum After July 2009 # 8-430-5UC3 All but the Idler Hub After April 2013 # 008-430-03 include all the bearings and seals. For this you will have to also add the following components for each hub. Inner Bearing # 387A Inner Race #...
    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...
    Image 1 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...
  • How to Determine if Kodiak Disc Brake Kit Will Fit Dexter Axle 10K HD Axle
    The Kodiak Disc Brake Kit # K2R1058D11HD will fit your Dexter 10K HD axle if your axles uses the Dexter K08-288-91 hub, which we have as part # 8-288-3UC1 on our site. This hub uses a # 387A inner bearing, # 25580 outer bearing, and an oil seal with a 2.875" inner diameter. Attached are some review videos for you to check out.
    view full answer...
  • 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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  • 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...
  • 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...


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