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Trailer Hub and Drum Assembly - 8,000-lb Axles - 8 on 6-1/2 - Oil Bath

Trailer Hub and Drum Assembly - 8,000-lb Axles - 8 on 6-1/2 - Oil Bath

Item # 8-285-10UC3-A
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8-285-10UC3-A - 16 Inch Wheel,16-1/2 Inch Wheel,17 Inch Wheel,17-1/2 Inch Wheel Redline Trailer Hubs and Drums
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Trailer hub-and-drum assembly includes lug nuts, inner bearing (25580) and race, outer bearing (02475) and race, oil seal, and cap. Fits 8,000-lb axles. Lowest Prices for the best trailer hubs and drums from Redline. Trailer Hub and Drum Assembly - 8,000-lb Axles - 8 on 6-1/2 - Oil Bath part number 8-285-10UC3-A can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (1)
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Redline Trailer Hubs and Drums - 8-285-10UC3-A

  • 8 on 6-1/2 Inch
  • For 8000 lbs Axles
  • Hub with Integrated Drum
  • Oil Bath
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • 02475
  • 5/8 Inch Stud
  • 25580
  • Redline

Trailer hub-and-drum assembly includes lug nuts, inner bearing (25580) and race, outer bearing (02475) and race, oil seal, and cap. Fits 8,000-lb axles.


  • Application: 8,000-lb Dexter axles
  • Works with both electric and hydraulic brakes
  • Drum dimensions: 12-1/4" diameter x 3-3/8" wide
  • Bolt pattern: 8 on 6-1/2"
  • Pilot hole diameter: 4-3/4"
    • New style - compared to the 4.56" old style
  • Includes bearings, races, seal, oil cap, wheel bolts, and lug nuts
    • Wheel stud diameter: 5/8"
    • Bearings:
      • Inner bearing: 25580
      • Outer bearing: 02475
  • Capacity: 4,000 lbs

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"

8-285-10UC3-A Trailer Hub and Drum - Oil Bath - 8K Axles - 12-1/4" x 3-3/8" - 8 on 6-1/2 Bolt Pattern

Customer Reviews

Trailer Hub and Drum Assembly - 8,000-lb Axles - 8 on 6-1/2 - Oil Bath - 8-285-10UC3-A

Average Customer Rating:  3.0 out of 5 stars   (1 Customer Reviews)

Trailer hub-and-drum assembly includes lug nuts, inner bearing (25580) and race, outer bearing (02475) and race, oil seal, and cap. Fits 8,000-lb axles.

- 8-285-10UC3-A

Original parts were wrong. Talked with Tara and she fixed the problem. Thank you for taking care of the issue.


Ask the Experts about this Redline Trailer Hubs and Drums

  • Replacement Oil Seal Recommendation for Dexter Hub Part # 8-285-10UC3-A
    The correct oil seal for Dexter Hub Part # 8-285-10UC3-A is the part # 10-63. I attached a review video for this as well.
    view full answer...
  • Recommended Brake Assemblies and Hubs with Oil Bath For Dexter 8,000 lb Axles
    For your 8,000 lb axle hubs with oil bath, I recommend the Trailer Hub and Drum Assembly - 8,000-lb Axles - 8 on 6-1/2 - Oil Bath, # 8-285-10UC3-A. The brake assemblies I recommend to match the hubs are the Electric Trailer Brake with Dust Shield - Self-Adjusting - 12-1/4" - Left Hand - 8,000 lbs # AKEBRK-8L and # AKEBRK-8R for the right hand side. You may want the Brake Adjustment Spoon for Drum Brakes # W80630 for the initial adjustment, but these brakes with self-adjust after that. If...
    view full answer...
  • Recommended Wet Hub and Drum Assembly for 8000 pound Trailer Axles
    For an oil bath or "wet" hub and drum assembly on your trailer with 8,000 pound axles, I recommend using the Redline # 8-285-10UC3-A. This has an 8 on 6-1/2 bolt pattern and includes lug nuts, inner bearing 25580, outer bearing 02475, races, oil seal and cap. I spoke with the manufacturer and the general maintenance schedule for oil bath hubs is 12 months or 12,000 miles, which is actually the same recommendation we give for grease hubs. Also keep in mind that with oil bath hubs you...
    view full answer...
  • What Kind of Oil is Used for a Wet Bath Hub and Drum Assembly and How Much
    To add oil to the Trailer Hub and Drum Assembly - 8,000-lb Axles - 8 on 6-1/2 - Oil Bath Item # 8-285-10UC3-A I recommend using 80w-90 gear oil. The 80w-90 gear oil is what we use on any of our new wet bath hub and drum assembly installs. Unlike greased bearings the wet bath oil doesn't have to be replaced it can just be added to what is there. Remove the rubber plug on the front of the cap and add the oil until it comes up line on the front of the cap. Once filled I recommend letting...
    view full answer...
  • Replacement 8 on 6-1/2" Hub And Drum Assembly With Oil Bath
    We currently only have two axle capacities for a 8 on 6-1/2" drum with integrated oil bath. For an axle capacity of 5,200 to 7,000 lbs, I recommend using the Trailer Hub and Drum Assembly part # 8-219-9UC3-A and part # 8-285-10UC3-A for 8,000 lb Dexter axles. In order to recommend the correct replacement drum and hub assembly with oil bath for you, I would need to know either the axle capacity or the bearings installed on your spindle. You can do this by finding the information tag on...
    view full answer...
  • How To Find New Hub/Drums with Oil Baths for Trailer Axle
    In order to find the correct hub/drum for a trailer you'll need to know the axle capacity. This can most easily be found listed on the axle tag in the center of the beam. The Trailer Hub and Drum Assembly part # 8-285-10UC3-A for example is for 8,000 lb axles and uses an oil bath. It might be worthwhile to make sure the pilot hole on the wheel exceeds that of the hub as well. This one is 4-3/4". Please let me know the axle capacity so I can confirm the correct hub/drum. I have attached...
    view full answer...
  • Can The Oil Cap Included With Trailer Hub and Drum 8-285-10UC3-A Be Ordered By Itself?
    The Trailer Hub and Drum Assembly # 8-285-10UC3-A you were looking at is an oil bath hub designed to be used with oil such as the # XLPROLUBE and not grease like a standard hub. The oil cap included with this hub can be ordered by itself as part number # RG04-230. I included videos of the products mentioned for you to take a look at.
    view full answer...
  • Replacement Brake Assembly and Oil Seal for Dexter 00828510 Brake Drums
    It looks as if you have the # 8-285-10UC3-A Dexter Oil Bath hubs. Thanks for sending the photo! Those hubs take a 12 x 3-3/8 inch brake assembly, I'd recommend a self-adjusting brake assembly kit like # K23-532-533-00 which are compatible with a 4 bolt brake flange. This includes the right and left brake assembly. The correct oil seal for your hubs is # 10-63, which has a 2.25 inch ID and a 3.376 inch OD. You can see some product videos for these product by clicking the provided...
    view full answer...
    Image 1 for
  • Replacement Hubs for 8000lb Lippert Axle
    Yes, the Dexter Hub Assembly # 8-285-9UC3 will fit on your Lippert Axle, but after checking with Lippert it looks like the 8k axle that you're using originally came with a hub with 5/8" stud diameter, where this Dexter Hub has 9/16" studs- both hubs use inner bearing # 25580 /outer bearing # 02475 . In order to avoid having to change out your wheels as well, I recommend going with the Redline Hub and Drum Assembly # 8-285-10UC3-A . It is also an oil lubricated hub, has 5/8" studs and will...
    view full answer...
  • Hub and Drum Replacement for Trailer with 8k Axles and 8 on 6.5 inch Bolt Pattern
    For brake assemblies you'd want the part # AKEBRK-8R that you referenced for the right hand side and part # AKEBRK-8L for the left hand side. Then for a hub that fits this, the 8k axle capacity, and the stud diameter you need of 5/8 inch the part # 8-285-10UC3-A would be what you'd want.
    view full answer...
  • Replacement Oil Bath Hub Drum for 8 on 6-1/2 Bolt Pattern on 8,000 lb Axle
    The Trailer Hub and Drum Assembly - 8,000-lb Axles - 8 on 6-1/2 - Oil Bath # 8-285-10UC3-A is the replacement option we have. The only difference is the wheel studs are 5/8 inches instead or the 9/16 inch wheel studs of your current hub. This comes with the lug nuts you need as well, so it will be an easy swap and will fit your wheels.
    view full answer...
  • Recommended Hub and Drum Assembly with 5/8 Inch Studs for 8,000 Pound Dexter Axle
    The 008-285-11 number you found on your existing Dexter hub does refer to the Dexter Trailer Hub and Drum # 8-285-11, however as you mentioned, this particular assembly uses 9/16 inch wheel studs. This is the case with all of our grease lubed hub and drum assemblies that are designed for 8,000 pound axles. We do have the Redline Trailer Hub and Drum Assembly # 8-285-10UC3-A, which will work as a replacement on your axle. This is an oil bath hub and drum that uses the same # 25580 inner...
    view full answer...
  • Needing Replacement Brake Drums With 5/8 Inch Wheel Studs on 8,000 Lbs Axles
    The brake drums that we carry for the 8,000 lbs axles come in two types, grease or oil bath style. The drums that have the 5/8 inch wheel studs, like # 8-285-10UC3-A, are for the oil bath style drums.The grease lubed drums, like # AKHD-865-8-K, are using 9/16 inch wheel studs. If you have the 5/8 inch studs, then you will need # 8-285-10UC3-A. The drums will come with new lug nuts, bearings, and seals. The only difference is these drums are designed to use oil instead of grease. You...
    view full answer...
  • Replacement Trailer Hub/Drum for Part Number 2420801
    The hub/drum you sent in a picture of is a Lippert 8,000 lb axle hub with an 8 on 6-1/2 inch bolt pattern designed for oil-bath applications. The correct replacement then is the # 8-285-10UC3-A.
    view full answer...
    Image 1 for
  • Oil Bath Hub Installation and Operation for 8,000 lbs Dual Axles
    Oil bath hubs like the Dexter Trailer Idler Hub Assembly # 008-399-93 for 8K axles or the hub/drum version # 8-285-10UC3-A simply soak the bearings in oil to keep them lubricated. Dexter bought out AL-KO years ago after they partnered for a long time. The center cap screws on as you stated and has an o-ring to prevent leaking. The cap just needs to be secure so you don't overtighten and damage the threads causing leakage. The center plug allows you to keep the cap in place and add oil...
    view full answer...
  • Replacement Trailer Hub/Brake Drum For LCI #2420801 8K Axle
    An 8K hub would use a drum with an inside diameter of 12-1/4 and an inside depth of 3-3/8 inches. If that's the inside dimensions of the drum you have, the Dexter 8K # 8-285-10UC3-A would be the correct replacement. The hub uses a 25580 inner/02475 outer bearing an an 8 on 6-1/2 inch bolt pattern with 5/8 inch wheel studs. The hub is billed as a oil bath hub, but it will work perfectly with either grease or oil, so it'll work great as a replacement for your LCI 2420801 hubs.
    view full answer...
  • Hub and Drum for 8,000 Pound Trailer Axle that Uses 5/8 Inch Studs
    We have one hub and drum assembly that uses the same bearings as the hub you referenced but that also has 5/8 inch studs. It is # 8-285-10UC3-A. This hub is rated for 8,000 pound axles but it is an oil bath hub and doesn't use grease like regular hubs. Despite it being an oil bath hub you can still use it. The lug nuts are included.
    view full answer...
  • Can Standard Lug Nuts be Used With the Taskmaster TA69VR?
    The Taskmaster Provider 215/75R17.5 Radial Tire w/ 17-1/2" Solid Center Wheel - Offset - 8 on 6-1/2 - LR H # TA69VR is designed to be used with and requires the use of flange nuts instead of the standard conical style lug nuts. Typically an 8,000 pound axle will use 5/8"-18 studs as the 1/2"-20 stud will usually denote a hub/drum that will be used on up to a 7,000 pound axle. With that being said, I recommend upgrading your hub/drum to go with this tire and wheel set-up. If you have...
    view full answer...
    Image 1 for
  • Can Dexter Trailer Hub # 008-399-93 Be Used with Drum Brakes
    The Dexter Trailer Hub # 008-399-93 that you referenced can only be used for disc brakes with the addition of an appropriately rated rotor assembly like # K71-635-00. For electric or hydraulic drum brakes a hub-and-drum assembly is needed instead. For an oil bath 8,000 pound hub-and-drum assembly that will fit the same spindle as the above option the Dexter # 8-285-10UC3-A will work perfectly. For the corresponding brake assemblies I recommend the Dexter Self-Adjusting # 23-450-451...
    view full answer...
  • 8k Rated etrailer Hub/Drums that Work as Replacement for Dexter 8-285 Hub
    Yes the etrailer hub/drum # AKHD-865-8-K that you referenced would work great as a replacement for the Dexter 8-285 hub part # 8-285-10UC3-A that you also mentioned. Then for a set of brake assemblies we have the self adjusting Dexter kit part # 23-434-435 which would work great or the etrailer equivalent part # AKEBRK-8.
    view full answer...
  • Replacement Hub/Drum for Lippert 8k Hub 2420801
    The Lippert 2420801 hub is an 8k hub with an 8 lug bolt pattern so for a replacement you'd just need the part # 8-285-10UC3-A.
    view full answer...

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Info for this part was:

Employee Jeff D
Installed by:
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Expert Research:
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Employee Wilson B
Written by:
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