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  1. Trailer Hubs and Drums
  2. Dexter
  3. 8 on 6-1/2 Inch
  4. For 8000 lbs Axles
  5. Hub with Integrated Drum
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
  8. 17 Inch Wheel
  9. 17-1/2 Inch Wheel
Trailer Hub and Drum Assembly - Nev-R-Lube - 8 on 6 1/2

Trailer Hub and Drum Assembly - Nev-R-Lube - 8 on 6 1/2

Item # 8-389-81UC3
Our Price: $599.68
You Save: $517.58
Trailer Hubs and Drums
Shipping Weight: 53 lbs
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Great Prices for the best trailer hubs and drums from Dexter. Trailer Hub and Drum Assembly - Nev-R-Lube - 8 on 6 1/2 part number 8-389-81UC3 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (11)
  • Q & A (0)
  • Videos (1)
  • Photos

Dexter Trailer Hubs and Drums - 8-389-81UC3

  • 8 on 6-1/2 Inch
  • For 8000 lbs Axles
  • Hub with Integrated Drum
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • Nev-R-Lube
  • 9/16 Inch Stud
  • Dexter


  • Fits 8,000 lb axles
  • Capacity: 4,000 lb each
  • Works with both electric and hydraulic brakes
  • Drum size: 12-1/4" x 3-3/8"
  • Stud diameter: 9/16"
  • Parts included:
    • Cartridge bearing 50MM x 84MM x 54MM (31-71-3)
    • Snap ring, inner bearing retainer, 3.35" O.D. (69-93)
    • Snap ring, outer bearing retainer,.821" O.D. (69-96)
    • Grease Cap, 3.355" O.D., Drive-In (75DC)
    • Drive-In Studs, 9/16" Diameter (7-132)
    • 9/16" Cone Wheel Nut (6-53)
  • Hub and drum are made in the USA

008-389-81 Dexter Hub and Drum Assembly

Replaces 8-389-81UC3

Video of Trailer Hub and Drum Assembly - Nev-R-Lube - 8 on 6 1/2

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 with Integrated Drum - 8-389-81UC3 Review

Speaker 1: Today we're going to look at the Dexter never lube trailer hub and drum assembly for 8,000 lb Dexter 50 millimeter never lube axles with the eight on six and a half inch bolt pattern.This hub and drum assembly will include the 50 millimeter cartridge bearing, the bearing retainers to keep it in there, the grease cap, the wheel studs and you notice the lug nuts are also included. This is designed to work with both electric, let me turn it around for you. Both electric and hydraulic brakes. It is for use with the 12 and a quarter inch by three and three eighths inch brake assemblies. Application again is the 8,000 lb Dexter 50 millimeter never lube axles. Capacity on this one is 4,000 lbs.

So when this is used with one on the other side of the axle, it will meet the 8,000 lb capacity of the axle.The drum dimension we're going to measure here. Inside diameter is right at 12 and a quarter inches. Overall width is right at 4 inches. Again, the bolt pattern is an eight on six and a half inch bolt pattern. The grease cap that it comes with is a 3.355 inch outer diameter.

It fits right in there. The wheel stud size is nine sixteenths by eighteen. The lug nuts include eight of the nine sixteenths by eighteen lug nuts.That should do it for the review on the Dexter never lube trailer hub and drum assembly for 8,000 lb Dexter 50 millimeter never lube axles with the eight on six and a half inch bolt pattern.

Customer Satisfaction Score:

Customer Reviews

Trailer Hub and Drum Assembly - Nev-R-Lube - 8 on 6 1/2 - 8-389-81UC3

Average Customer Rating:  4.9 out of 5 stars   (11 Customer Reviews)


There was some damage from shipping but e trailer didn’t hesitate to get the replacement parts to us promptly. Everything went together easily and I was back on the road. Thank you for your excellent customer service and support.


Great job thank you


This is OEM equipment so it works perfect. Shipping was under five days and free.


The parts were correct and they fit. we ordered and they came in 2 days. i cant complain.









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

  • Does the Bearing Come Already Installed in Trailer Hub and Drum Assembly, # 8-389-81UC3
    For the Trailer Hub and Drum Assembly, # 8-389-81UC3, with the cartridge style bearing, the parts are pre-fitted into the center of the hub so you will not have to do it.
    view full answer...
  • Replacement Trailer Hub and Drum Assembly for Dexter 8-389-91
    I spoke with my contact at Dexter and she informed me that the Dexter # 8-389-81UC3 on our site and the 8-389-91 on your trailer are essentially the same. Basically, the 8-389-91 usually refers to the the complete hub and drum assembly while the -81 part number is simply the hub/drum and cartridge. However, the Dexter # 8-389-81UC3 on our site actually includes the entire assembly, so in this particular case, the two part numbers are exactly the same. The # 8-389-81UC3 will fit perfectly...
    view full answer...
  • Dexter NeverLube Axle Hub # 8-389-81UC3 Recommendation
    The only way the # 8-389-81UC3 is available is with the grease cap and lug nuts. Considering the cost of this hub and how much grease caps and lug nuts cost you wouldn't save much by not getting the hub with those items.
    view full answer...
  • Do Drums Have to Remove with Hub on Nev R Lube Hub/Drums
    The hubs and the drums need to come off together on a Nev R Lube hubs like the # 8-389-81UC3.
    view full answer...
  • Replacement Nev-R-Lube Hub Assembly for 8,000 Pound Axles and Replacement Trailer Shock
    We have the Nev-R-Lube Hub and Drum Assembly # 8-389-81UC3 that is for 8,000 pound axles. The hub is an 8 on 6-1/2 bolt pattern and uses 9/16 inch drive-in studs that are included. For replacement shocks you're going to want to measure your current ones to make sure you find the correct size. Our Lippert Components Replacement Shock # LC283271 measures 7-1/2 inches when compressed and 12 inches when extended. See the video I've attached for the correct way to measure shocks.
    view full answer...
  • Using Bearing Numbers or Spindle Measurements to Find a Replacement Hub for a Trailer
    The definitive way to determine the correct replacement hub is to go by the inner and outer bearing numbers stamped into the sides of the bearings. With these numbers I can determine the best hub or hub and drum assembly for your trailer. Trailer Hub and Drum Assembly # 8-389-81UC3 is for Nev-R-Lube axles that use cartridge bearings. This one uses # 31-71-3 but you won't find that number stamped in it. If can be identified by its dimensions. The inner diameter is 50mm. The other way to...
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    Image 1 for
  • Grease Cap For 8,000 lb Dexter Nev-R-Lube Hub
    Yes it sure is; the correct grease cap for the 8,000 lb Dexter Nev-R-Lube Hub and Drum # 8-389-81UC3 is indeed the part number you mentioned: - Grease Cap for Nev-R-Lube Hubs - 3.355" Outer Diameter # 75DC I verified with Dexter for you that the # 75DC is indeed the correct part.
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  • Replacement Bearing for 8,000 Pound Dexter Nev-R-Lube Trailer Hub and Drum Assembly
    For your Dexter Trailer Hub and Drum Assembly - Nev-R-Lube # 8-389-81UC3, the correct 50mm bearing is indeed the Dexter # 31-71-3 product that you referenced in your question. This bearing is also used on 8,000 pound axles like what you have so there will be no fitment or capacity issues. This bearing has an inner diamter of 50mm and an outer diameter of 84mm. I have attached a short video demonstration on this product that you can also check out.
    view full answer...
  • What Hub Does Dexter Nev-R-Lube Bearing 31-71-3 Fit
    The 8,000 lb Dexter Nev-R-Lube hub/drum you'd need to go along with the bearing part # 31-71-3 that you referenced is the part # 8-389-81UC3.
    view full answer...
  • Nev-R-Lube Bearings for 8K Capacity Axle
    In order to use an 8K Nev-R-Lube hub like # 8-389-81UC3, the spindle on the axle would need to be 50mm in diameter to accommodate the # 31-71-3 50mm Nev-R-Lube cartridge bearing included with the # 8-389-81UC3 hub.
    view full answer...
  • Can Dexter Nev-R-Lube Hubs Be Replaced with Oil Bath Hubs
    The existing Dexter 8K Nev-R-Lube spindles on your trailer are designed specifically for the cartridge-style bearing that the corresponding Nev-R-Lube Hubs # 8-389-81UC3 use. The spindles themselves are uniquely sized for this purpose so unfortunately the hubs can't be replaced with standard hubs that use traditional inner and outer bearings, including oil-bath units like the Dexter 8K # 8-285-9UC3 that you referenced. The only way to switch to hubs like this would be to replace the entire...
    view full answer...
  • Hub and Rotor Fit for Dexter Hub and Drum Assembly on Nev-R-Lube Axle
    The Kodiak hub KHR138XL9E you referenced has been discontinued. I recommend the Dexter Disc Brake Kit - 12-1/4" Hub/Rotor - 8 on 6-1/2 - E-Coat - 8K - Nev-R-Lube # K71-646-2-91 which will fit on your Nev-R-Lube axle just like the Drum Assembly # 8-389-81UC3. If you need further recommendations, please let me know and I'd be happy to assist.
    view full answer...
  • How to Determine Correct Nev-R-Lube Bearing/Hub Assembly
    From the pictures you sent in it looks like the inner diameter of your Nev-R-Lube bearing is about 2" which means you'd need the 50MM Nev-R-Lube Bearing for 8,000-lb Dexter Axles # 31-71-3. Aside from that you're basically just going to need to pull that bearing and measure the inside diameter to determine if the 50MM # 31-71-3, 42MM # 31-73-3, or 35MM # 31-72-3 bearing will best fit. The part 008-402-81 that you referenced finding somewhere else looks to be a hub assembly for a disc brake...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Electric Brakes for 8,000 lb Dexter Hub and Drum
    I believe you are asking about the correct electric brake size for the Dexter Hub and Drum Assembly # 8-389-81UC3. This hub and drum assembly is rated for 8,000 lbs and has a drum that measures 12-1/4" x 3-3/8" so the correct electric brake assembly would be the Dexter Electric Trailer Brake Kit # K23-532-533-00. These self-adjusting brakes measure 12" x 3-3/8" to fit securely in the drum, are also rated for 8,000 lb axles and fit a 4-bolt mounting flange. Just the brake shoes for these...
    view full answer...

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

Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Adele M
Updated by:
Adele M
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L

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