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

lowest price pledge

Retail:$556.66

Our Price: $358.71

You Save: $197.95
Trailer Hubs and Drums

This item qualifies for Free Shipping

Shipping Weight: 38 lbs

Quantity: 
Dexter Axle Hub - 8-288-3UC1
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
Please enter a valid email address.

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.

pop out icon replay 360 icon
horizontal rotate icon

Product Images

Videos


  • 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
  • 387A
  • Dexter Axle
  • 25580
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 800-298-8924 for expert service.


  • All Info
  • Reviews (4)
  • Q & A (20)
  • Videos (1)
  • Photos
  • Why etrailer?

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

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







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


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




Video Transcript for Dexter Axle Trailer Hubs and Drums - Hub - 8-288-3UC1 Review

Speaker 1: Today we're going to take a look at the Dexter Oil Bath Trailer Idler Hub Assembly, for 9,000 pound to 10,000 pound axles. Has the eight on six and a half inch bolt pattern. Now this trailer hub assembly is designed to fit idler axles, it's designed to work with the Dexter 9,000 pound to 10,000 pound oil bath hub assemblies, and this is the oil bath design, which will let you check your lubricant level without disassembling the hub. Basically has the screw in clear oil cap right here that you can see through and check the lubricant level.Now the hub assembly itself is a sturdy iron construction. Does come with everything laid out here on the table, the hub assembly itself, the both inner and outer bearings, the bearing races which are pre-installed in the hub, the oil seal, the oil cap, the wheel retaining ring and the lug nuts are all included. This part is made in the USA.

Now again the application for this is 9,000 pound to 10,000 pound axles manufactured before July of 2009.The bolt pattern on this is eight on six and a half inches. The pilot hole diameter, which is the measurement across here is four and three-quarter inches. Does have a wheel bolt diameter of five-eights of an inch. And the weight capacity on this one hub assembly is 5,000 pounds, so when this is matched with one on the other side of the axle, it'll meet your 10,000 pound axle capacity.Now the bearings that are included, comes with the inner bearing, which is the larger of the two, that's a part number 387A, has a 2.25 inch inner diameter. The outer bearing, which is part number 25580, has a 1.75 inch inner diameter.

The races again we mentioned are pre-included, pre-installed on the hub. Comes with the unitized oil seal for the oil bath design, that's included, part number 10-51. Has an inner diameter of 2.875, outer diameter of 3.88 inches. The oil cap kit, which is part number RGO4-270, and that kit means it's the clear cap, the o-ring that's installed, and the rubber plug that's installed also. Includes the wheel retaining ring, part number 33-52-1 and then eight of the five-eights by 18 90 degree cone lug nuts, part number 6-109.But that should do it for the review on the Dexter Oil Bath Trailer Idler Hub Assembly, for 9,000 pound to 10,000 pound axles with the eight on six and a half inch bolt pattern..


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   (4 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.

- 8-288-3UC1
by:

Great parts great company to work with 588910



- 8-288-3UC1
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. 466052



- 8-288-3UC1
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 419371



- 8-288-3UC1
by:

Product works well 240627


4
4

Ask the Experts about this Dexter Axle Trailer Hubs and Drums
Do you have a question about this Trailer Hubs and Drum?


  • Recommended Complete Disc Brake Conversion System For 10,000 lb Dexter Axles
  • To replace your leaking seals, you will want the Unitized Oil Seal # 10-51. This is a confirmed fit for your hubs. I've attached a video of an oil seal installation on a similar hub to help. For your disc brake conversion, you will need to use the Dexter Trailer Hub Assembly - 9,000-10,000-lb Axles - 8 on 6-1/2 - Oil Bath # 8-288-3UC1 and then the Kodiak Disc Brake Kit - 11" Rotor - 8 on 6-1/2 - Raw Finish - Leaf Spring - 10,000-lb Dexter # K2R1058D11E compatible with these hub assemblies...
    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 Kodiak Hydraulic Brake Line Kit # 24TA-BLKIT 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...

  • 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...

  • Parts Needed to Install Disc Brakes on Gooseneck Trailer with 10k Axles
  • Since we know you have 10k axles that makes picking out the disc brake kit easy. For that you'd need the part # K2R1058D11E but you'd need to have idler hubs installed already like # 8-288-3UC1 as this is a kit designed to slip over idler hubs. If you the plan is to go to electric over hydraulic brakes you'll need an actuator as well. For that the HydraStar brand is the way to go. For that the part # CAR-HBA16-2 comes with everything needed to install including brake lines so you'd be set.
    view full answer...

  • Disc Brake Kit Availability for a Dexter 10k Axle
  • The Kodiak 10K Disc Brake Kit # K2R1058D11 is intended to allow conversion of a Dexter 8-288 idler hub for use with disc brakes. It is compatible ONLY with one specific hub, the Dexter hub 8-288 built between February 1990 and August 2009. What you can do is take off your hubs and measure the diameter of the spindle where the bearings and seal rides. If where the bearings ride is 2.250 and 1.750 and for the seal 2.875 this hub will fit. If your trailer already has disk brakes then you...
    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...

  • 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 Needed to Convert to Electric Over Hydraulic Disc Brakes
  • The Kodiak Disc Brakes # K2R1058D11 may work with your 10,000 lb Dexter axle but you will need to verify this. To do that you can take apart your hub assembly and look at the bearings themselves; wipe away the grease and you should be able to see the part number stamped directly on them. If you are unable to find them, you need to use a digital caliper such as # 301-17068 and measure your spindle to the thousandths of an inch where the bearings ride. You can use the photo I've attached...
    view full answer...

  • 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...

  • 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...

  • 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 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...

  • 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...

  • 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...

  • 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.
    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...

  • Best Way to Convert Lippert 10K Axles to Disc Brakes
  • Yes, we have everything you need to convert the electric drum brakes on your 2014 Kaufman Car Wedge Trailer to electric over hydraulic disc brakes. In order to do this you are going to need disc brake assemblies, trailer hubs, brake lines, and an electric over hydraulic actuator. For the disc brake assemblies you will want to use the Kodiak Disc Brakes part # K2R1058D11DAC. You will need one kit per axle. For the trailer hubs you will want to use the Dexter Trailer Idler Hub Assembly...
    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...

  • 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...

  • 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...


Do you have a question about this Trailer Hubs and Drum?




  • Why etrailer.com?

    At etrailer.com we guarantee:

  • Highest quality trailer hubs and drums for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • 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 hubs and drum 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

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

Info for this part was:

Installed by:
Jeff D
Expert Research:
Jameson C
Expert Research:
Adam R
Written by:
Laura H
Expert Research:
Jeffrey L
Photos by:
Sam P
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Hannah L

At etrailer.com 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.