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  1. Trailer Hubs and Drums
  2. Dexter
  3. 8 on 6-1/2 Inch
  4. For 7000 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 & Drum Assembly - 7,000 lbs Axles - 8 on 6-1/2 - Nev-R-Lube

Trailer Hub & Drum Assembly - 7,000 lbs Axles - 8 on 6-1/2 - Nev-R-Lube

Our Price: $532.58
You Save: $301.04
Trailer Hubs and Drums
Shipping Weight: 36 lbs
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Great Prices for the best trailer hubs and drums from Dexter. Trailer Hub & Drum Assembly - 7,000 lbs Axles - 8 on 6-1/2 - Nev-R-Lube part number 8-385-81SP can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (22)
  • Q & A (0)
  • Videos (1)
  • Photos

Dexter Trailer Hubs and Drums

  • 8 on 6-1/2 Inch
  • For 7000 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


  • Used on Dexter 50MM Nev-R-Lube Axles
  • Capacity of 3,500 lbs per each
  • Works with both electric and hydraulic brakes
  • Drum size: 12" x 2"
  • Stud size: 9/16"
  • Bolt pattern: 8 on 6-1/2"
  • Bearing and snap rings included (31-71-3 bearing)

008-385-81 Trailer Hub & Drum Assembly - 7,000 lbs Axles - 8 on 6-1/2 - Nev-R-Lube

Replaces 8-385-81 SP

Item # 8-385-81SP

Installation Details 8-385-81SP Installation instructions

Video of Trailer Hub & Drum Assembly - 7,000 lbs Axles - 8 on 6-1/2 - Nev-R-Lube

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 - 8-385-81SP Review

Today, we're going to take a quick look at Dexter Axles, Trailer Hub and Drum Assembly, part number 8-385-81SP. This hub and drum assembly is designed to be used on Dexter 50-mm Nev-R lube axles. That has a capacity of 3500 pounds so when paired up with another one, you'll have an axle capacity of 7000 pounds. It has an 8 on 6-1/2 bolt pattern. If we were to measure from one stud in the center directly across to the center of the other stud, we get about 6-1/2 inches for our 8 and 6-1/2 inches bolt pattern. The bearings, races and seal are all included and pre-fitted into the center of the hub.

You'll just need to source the cap to complete it. Now, I'll flip it over and take a look inside. We'll measure our diameter across the inside and we get 12 inches. We'll measure our depth and we get about 2-1/4 inches, which means we can use this hub and drum assembly with 12-inch by 2-inch brake assemblies. And that's it for our quick look at Dexter Axles, Trailer Hub and Drum Assembly, part number 8-385-81SP..

Customer Satisfaction Score:

Customer Reviews

Trailer Hub & Drum Assembly - 7,000 lbs Axles - 8 on 6-1/2 - Nev-R-Lube - 8-385-81SP

Average Customer Rating:  4.8 out of 5 stars   (22 Customer Reviews)


Nev-R-Lube bearings are very nerve racking. I'm so used to repacking and checking bearings annually these types of bearings worry me when traveling. So, after 10 years and 50,000 miles I decided to replace them. Etrailer had the best price on the hub and drum assembly, which was a no brainer. I have now had the new bearing on for a full year and 9,000 miles with no problems. RV bearings run cooler, braking is excellent. Installation was a breeze. Nev-R-Lube bearings are not one of my major concerns any longer.

Albert J.


Another 12,000 miles and the bearings are still running cool with no problems so far. Its convenient to not have to worry about repacking. I continue to monitor bearing temperatures and watch for any abnormalities.


We were going camping with friends at Carlyle lake. Two of these friends were Steve and Nancy. Nancy works at etrailer. On the way my breakaway brake was accidentally pulled by a piece of equipment in the back of the truck. I checked the main plug but not the breakaway. Needless to say by the time Igor there 50 miles my brakes and drums were toast. Steve got om the phone to Nancy and ordered me a new set. Nancy who was working picked them up and brought them to me the next day. Thank to them and Steve C. We had the brakes in a day and had them replaced and we are back rolling safely again. The product was an easy install from watching the video. Thanks again to my friends at etrailer. They are the greatest.

Steve H.


The product has met and exceeded my expectations—both for quality and workmanship. etrailer you are still the greatest a year later.


Amazing service ! Fast delivery. I will definitely use etrailer again


My husband installed the hub and bearing and there has been no problem with it in the past year.


Thanks for the prompt delivery best yet here in canada and also for stocking this hub and nev r lube bearing , almost non existent here.


First time dealing with etrailer I needed to check with them to be sure i was ordering the correct parts I spoke with Theresa She was very knowable and helpful The prices and service plus fast shipping is GREAT I will be ordering from them again in the future It is very rare for me to recommend anybody but these people deserve it THANK YOU FRANK LOCATED IN FLORIDA


Poor Packing items damaged

Etrailer Expert

Brooke M.


I am sorry to hear that. That is never fun. I will have our customer service team reach out to you about this.


Ordered lots of parts on Monday, received most of them by Thursday. The received parts were well packaged and undamaged. A few of the parts they didn't have in stock so they had those drop-shipped to me which should be delivered in the next couple of days.
No supplier I have ordered any parts from has such a great technical reference web site or personal customer support. Yea, Rebecca - Well Done! Yes, I'm very happy with the pricing.
Thanks for your great support and I look forward to doing business with them again. More info to follow as soon as I can get the parts installed on my trailer.


This product fits perfectly. Shipping was fast.


Very good and fast service, I recommend them.,muy buen servicio y rapidol la que me atendio fue muy amable,se los recomiendo


Ordered my hub and received it faster than quoted. Ordering was a breeze through their customer service. Back on the road quickly. Thanks!!!



Best price on these drums I could find. Thanks!


Excellent brand named product with quick delivery.










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

  • Does a Trailer Hub have a Specific Torque Spec
    The general rule is to use channel locks to tighten the castle nut, back it off some, tighten it again (should go a little further), back it off again and repeat this process until the hub is seated where it should be. Then you would back off the castle nut one notch if it had a pin or tang washer, or no more than a 1/4 turn if it doesn't.
    view full answer...
  • Measuring a Trailer Brake Hub and Drum Assembly to Select a Replacement
    There are usually identifying marks and other information on the outside of a trailer brake drum that indicates what it is. But if you go by the inner width and diameter and select the correct bolt pattern to match what you have then the part number of the old hub is not needed. I have included a picture showing where the measurements are taken. I have also included a link to our help article on determining bolt pattern.
    view full answer...
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  • Are Dexter Trailer Hubs Sold Individually or As a Pair
    The trailer hubs we offer like the part # 8-385-81SP that you referenced are sold individually. So if you needed enough for a trailer axle (two) you'd need to order a quantity of 2.
    view full answer...
  • Spindle Nut Torque for Installing Trailer Hubs
    When installing the castle nut on the end of the spindle to install a hub like the part # 8-385-81SP, there is no specific torque rating. The nut is ran down until there is no side to side play in the hub, and then backed off to the next notch in the castle nut so the tang washer or cotter pin can secure the nut. Over-tightening the castle nut can damage the bearings, races and spindle. If you click on the video link I provided, and fast forward to the 4:45 minute mark, you can see how...
    view full answer...
  • Replacement Hub Drum for 7000 lb Dexter Nev-R-Lube Axle
    You will want the Trailer Hub & Drum Assembly - 7,000 lbs Axles - 8 on 6-1/2 - Nev-R-Lube # 8-385-81SP or # 8-385-82UC3 which also includes the lug nuts and grease cap. Both assemblies include the bearings and there is not a hub that comes without them. The bearings are not pressed in but rather have a snap ring. I recommend keeping your current bearings as a backup or removing the new bearings to keep until needed.
    view full answer...
  • Correct Braking Assemblies for Dexter 7K Nev-R-Lube Trailer Hub & Drum Assembly
    The correct braking assemblies that match up with the Trailer Hub & Drum Assembly part # 8-385-81SP are the Dexter Nev-R-Adjust Electric Trailer Brakes part # 23-464-465.
    view full answer...
  • Bearings for the Dexter Nev-R-Lube Hub and Drum for 7000-Pound Axles
    The Dexter Nev-R-Lube Hub and Drum for 7000-Pound Axles, part # 8-385-81SP, utilizes a different kind of bearing system than traditional hubs and drums. This hub and drum comes with the bearings and snap ring already assembled into the drum. In other words, if you replace the hub and drum with this part, you will get the bearings and snap ring assembly with it. I've linked to a video review of this hub and drum for you to see. However, if you do not want to get the whole assembly and would...
    view full answer...
  • Dexter Nev-R-Lube Hub with 8 on 6-1/2 Bolt Pattern for 5,200 Pound Trailer Axle
    I did some checking and what you have is a derated 6 or 7K axle that uses the 7K Nev-R-Lube hub # 8-385-82UC3. It takes the 50mm Nev-R-Lube bearing # 31-71-3. I have included links to videos on both of these parts for you.
    view full answer...
  • Replacement Hub and Bearing for Dexter Nev-R-Lube Axles
    Normally you would go by the bearing numbers stamped into the sides of the bearing. If you do not have those bearings though then the spindle will have to be measured. Since you have Nev-R-Lube axles though there are not that many options. If the spindle is 50mm in diameter then # 8-385-81SP or # 8-385-82UC3 would be correct. If the spindle is 42 millimeters then you would need # 8-388-80UC3 which has a 6 on 5-1/2 inch bolt pattern.
    view full answer...
  • Replacement Hub Assembly with 15123 Inner Bearing and 09067 Outer Bearing
    Unfortunately it doesn't look like we've got any hubs that will work for this size spindle. For that reason, your best bet is likely going to be to replace the entire axle with a new one # 20545I-EZ-72-15 which comes with hubs included with a 5 on 4-1/2" bolt pattern, and the EZ lube spindles allow you to keep your bearings well lubricated. You will want to verify that your current axle's dimensions measure 72" from hub face to hub face and 58" from spring center to spring center, in...
    view full answer...
  • What Is the Torque Spec for a Nev-R Lube Spindle Nut
    The Dexter Spindle Nut # 6-183 used with your 50mm Nev-R-Lube bearing # 31-71-3, requires 145 to 155 ft/lbs of torque, according to the manufacturer's specifications. See attached diagrams for step by step instructions.
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Replacement Dexter Nev-R-Lube 8K Drum with 5/8 Inch Studs
    The part that you're looking for is the Dexter Trailer Hub and Drum Assembly for 8,000-lb Nev-R-Lube Axles - 8 on 6-1/2 # DX87XR. This is the same as the part # 8-385-81SP that you mentioned with the 9/16" studs except the DX87XR has the 5/8" studs that you're needing.
    view full answer...
  • Comparing The Electric Trailer Brake Kit # AKEBRK-7-SA To 7K Dexter Brake Assemblies # 23-465/23-464
    The Electric Trailer Brake Kit - Self-Adjusting - 12" - Left and Right Hand Assemblies - 5.2K to 7K # AKEBRK-7-SA are the equivalent of the Dexter 7K assemblies # 23-465 and # 23-464. They are actually a little nicer than the Dexter assemblies in my opinion because the brake shoe material is cut instead of scored and broken off so there is a cleaner line for less wear and tear at the edge of the material. They are absolutely compatible with the Trailer Hub & Drum Assembly - 7,000 lbs...
    view full answer...
  • Can I Put Different Hub Assembly on 5th Wheel
    It looks like your 5th Wheel currently is a Nev-R-Lube Hub and Drum Assembly for 7,000 lbs Axles with an 8 on 6-1/2 bolt pattern # 8-385-81SP. This is the assembly that you will want to order for your 5th Wheel. I have included a video review of this assembly for you to check out. I spoke with my contact at Dexter and she said you cannot replace your Nev-R-Lube assembly with a standard hub and drum assembly because the bearings and spindle are different. For an electric brake assembly...
    view full answer...
  • How to Avoid Over-Filling Hubs with Grease
    The most common cause for wheel bearing grease to leak onto drum brake components is accidental over-filling. Once grease gets onto the brake pads it is neither easy nor a terribly good idea to clean the grease off them. They really should be replaced if they become fouled with bearing grease. The best ways to prevent over-filling your hubs are to use caution when pumping grease into a spindle zerk fitting, such as the one on spindle # TRU37FR if this is what spindle you have. Pump too...
    view full answer...
  • Changing From 1/2 Wheel Studs To 9/16 For 8 on 6-1/2 Wheel Hub 7K Axel
    To use the Westlake 215/75R17.5 radial tire and wheel, # LHAS701 is an 8 on 6-1/2 it may be possible to change your studs from 1/2" to 9/16" so long as the studs are drive-in (as opposed to threaded); also, the length and knurl diameter needs to be the same. I have added a link to a video review for you to check out as well as a link to our selection of 9/16" diameter, drive-in wheel studs. Otherwise, you will need to select another wheel/tire combo that uses the 1/2" wheel studs your...
    view full answer...

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

Info for this part was:

Employee Patrick B
Installed by:
Patrick B
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Adele M
Updated by:
Adele M
Employee Wilson B
Updated by:
Wilson B
Employee David F
Test Fit:
David F

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