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  1. Trailer Hubs and Drums
  2. Dexter
  3. 8 on 6-1/2 Inch
  4. For 7200 lbs Axles
  5. Hub with Drum
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
  8. 17 Inch Wheel
  9. 17-1/2 Inch Wheel
Dexter Trailer Hub and Drum Assembly for 7,200-lb Axles Manufactured After 1999 - 8 on 6-1/2
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Dexter

Dexter Trailer Hub and Drum Assembly for 7,200-lb Axles Manufactured After 1999 - 8 on 6-1/2

Part Number: 8-393-4UC3
In Stock
$459.94
Retail:$488.24
You Save: $28.30
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This hub-and-drum assembly fits most 7,200-lb, axles manufactured after 1999, with a 4-bolt brake flange. Inner bearing (25580) and race, outer bearing (02475) and race, grease seal, grease cap, wheel bolts, and lug nuts included. Great Prices for the best trailer hubs and drums from Dexter. Dexter Trailer Hub and Drum Assembly for 7,200-lb Axles Manufactured After 1999 - 8 on 6-1/2 part number 8-393-4UC3 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (1122)
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Dexter Trailer Hubs and Drums - 8-393-4UC3

Highlights

  • For 7,200-lb Axles (Post-1999): Works with 4-bolt brake flange and 12-1/4" x 2-1/2" brakes.
  • 8 on 6-1/2" Bolt Pattern: Fits wheels from 16" to 17-1/2" with 9/16" wheel bolts.
  • Includes Bearings & Hardware: Comes with 25580 inner and 02475 outer bearings, races, seal, cap, bolts, and lug nuts.
  • Built for Brake Performance: Provides the friction surface needed for electric or hydraulic drum brakes.
  • Strong Iron Construction: Durable hub-and-drum assembly rated for 3,600-lb per hub capacity.
Made in USA

Features to know about

Built for Heavy Loads: Fits 7,200-lb Axles Manufactured After 1999

When you’re hauling serious weight, this Dexter hub-and-drum assembly delivers the reliability you need. It’s made for 7,200-lb trailer axles built after 1999 and uses a 4-bolt brake flange. The 12-1/4" diameter x 2-1/2" wide drum gives your brake shoes a solid surface to grip for consistent stopping power. With a 3,600-lb individual hub capacity and an 8 on 6-1/2" bolt pattern, it’s a strong, dependable setup built to handle demanding loads.

Ready to Go Right Out of the Box: Bearings, Races, and Seal Included

No need to hunt down extra pieces or reuse old hardware. This assembly comes complete with everything you need to mount it—inner bearing (25580) and race (25520), outer bearing (02475) and race (02420), grease seal RG06-070, grease cap, wheel bolts, and lug nuts. The included parts make installation straightforward and get your trailer back on the road without extra delays.

Smooth Operation with Standard Grease Setup: Easy Maintenance Design

This hub is built for standard grease lubrication, not oil bath systems. That makes it simple to maintain using standard trailer grease. The design keeps the bearings protected and turning smoothly, so you can count on consistent performance mile after mile.

Durable Iron Construction: Long-Lasting Reliability

Dexter builds this assembly from sturdy iron, giving it the strength to stand up to regular use and heavy braking. The solid construction helps prevent warping or cracking under load, giving you lasting stability for the long haul.

Fits Common Wheel Sizes: 16" to 17-1/2" Compatibility

Whether your setup runs 16", 16-1/2", 17", or 17-1/2" wheels, this hub-and-drum assembly fits right in. The 9/16" wheel studs and 2.72" grease cap flange diameter round out a dependable, well-matched package that keeps everything rolling smoothly.

Specs

Application Information

  • Application: 7,200-lb trailer axles manufactured after 1999
  • Brake flange: Uses 4-bolt brake flange
  • Works with: 12-1/4" brake assembly

Wheel and Drum Specifications

  • Wheel size: 16" to 17-1/2"
  • Drum dimensions: 12-1/4" diameter x 2-1/2" wide
  • Bolt pattern: 8 on 6-1/2"
  • Grease cap flange diameter: 2.72"
  • Wheel bolt diameter: 9/16"

Weight and Capacity

  • Weight capacity: 3,600 lbs

Bearing, Race, and Seal Information

  • Bearing (included) - Inner bearing: 25580 (1.75" inner diameter)
  • Bearing (included) - Outer bearing: 02475 (1.25" inner diameter)
  • Races (included) - Inner race: 25520
  • Races (included) - Outer race: 02420
  • Grease seal (included): RG06-070
Determining Bolt Pattern

1. Count the lug holes

Look at the wheel hub or the back of the wheel and count how many lug holes there are(also called bolt holes).

Common configurations include: 4-lug, 5-lug, 6-lug and 8 lug

2a. For even lug counts (4-lug, 6-lug, 8-lug)

Measure from the center of one lug hole directly across to the center of the hole opposite it.

Center to Center
Common configurations: 4 on 4", 6 on 5.5", 8 on 6.5"

2b. For odd lug counts (5-lug)

Measure from the center of one lug hole to the outer edge of the hole directly across (not center-to-center since there's no directly opposite hole).

Center to Outside Edge
Common configurations: 5 on 4.5" (most popular), 5 on 5", 5 on 4.75", 5 on 5.5"

008-393-91 Trailer Hub and Drum

Replaces 8-393-4UC3





Video of Dexter Trailer Hub and Drum Assembly for 7,200-lb Axles Manufactured After 1999 - 8 on 6-1/2
Video Thumbnail Video Player Dialog

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




Video Transcript for Review of Dexter Trailer Hubs and Drums - Hub with Drum - 8-393-4UC3

Hello everybody, this is Jeff at Etrailer. Today we're gonna take a look at the Dexter 12 and a quarter inch trailer hub and drum assembly with the 9/16th inch diameter wheel studs. They're 7,200 pound axles that have an eight on six and a half inch bolt pattern. Now when you're hauling serious weight, this Dexter hub and drum assembly is gonna deliver the reliability that you need. As we mentioned, it's made for 7,200 pound trailer axles that are built after 1999 and use a four bolt brake flange. The 12 and a quarter inch diameter, the two and a half inch wide drum gives your brake shoes a nice solid surface for grip for consistent stopping power.

You can see if I rotate this around, sort of lift this up, you'll be able to see your brake shoes can go here for regular hydraulic brakes. If you're using electric brakes, then you'll use this braking area right here. So it will work on either hydraulic or electric brakes. Now with a 3,600 pound individual hub capacity and an eight on six and a half inch bulk pattern, it is strong, dependable setup, built to handle demanding loads. It is a nice sturdy iron construction, and it will include everything I have laid out here on the table.

The hub and drum assembly, the pre-installed bearing races, the outer and inner bearing races are all pre-installed ready to go. The inner and outer bearings are included. The grease seals included the grease cap, and over here it includes eight of the 9/16ths by 18 size lug nuts. Now if you do need the part numbers on the bearings, the seal, the cap, they are all listed on the bottom of the product page of this part number. Again, bulk pattern we mentioned, eight on six and a half inches.

The wheel size little fit on this is 16 inch up to 17 and a half inches, and the wheel studs are 9/16 of an inch. Now if you do have any other additional questions regarding this part or any other item we carry, please feel free to reach out to us. So they're gonna help you get all of your questions answered for you. But that is gonna do it for a look at this Dexter 12 and a quarter inch trailer hub and drum assembly with the 9/16th inch wheel studs for 7,200 pound axles.

Customer Satisfaction Score:

Ratings & Reviews

4.7

1122 reviews
Review sort icon
This hub-and-drum assembly fits most 7,200-lb, axles manufactured after 1999, with a 4-bolt brake flange. Inner bearing (25580) and race, outer bearing (02475) and race, grease seal, grease cap, wheel bolts, and lug nuts included.

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ETrailer helped me take this shabby trailer to sheik in just one week! Thank you so much for the helpful information. I had no idea what the axel rating was until I watched your video on inner/outer bearing sizing.



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Very fast delivery Thankyou



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Very helpful with the Oder process, got it to me with no problems.



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Good fit and it had everything I needed included.



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Spectacular all around!! Part came in time and all was perfect. Phone help was wonderful and super helpful!



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Had what we needed Shipped day order was placed. Received day was told to expect. What more could you ask.



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The first one that was sent to was wrong stud size I called they sent a different one still wrong I had to remove old studs my old hub and use them on the new one I can't wait for another week for a new one to be shipped to me



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Very pleased with the service and prompt delivery only thing was I only got 7 lug nuts instead of 8 and the studs aren’t really long enough because the studs don’t come all the way out of nuts

Jenny N. profile picture

Jenny N.

12/22/2021

I will have our customer service team reach out to you.



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Low price for top quality and great service thank you I get my order fast



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Just what I expected and real fast shipping. Quality merchandise packed well for shipping.



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This is been a great hub for my trailer.. I have had no problems with it and it has had to have zero maintenance.. it was fairly easy to install, And etrailer was great to deal with..Tera my rep fixed an issue for me and made it all work..thanks



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The parts were shipped and received the next day. Huge plus for our customer. Thank you for the prompt shipping.


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

  • Dexter 7,200 Pound Axle Hub and Drum Assembly with 5/8 Inch Wheel Studs
    We have Dexter 8 on 6-1/2 Hub-and-Drum Assembly for 7,200-lb Axle - 9-Bolt and Newer 4-Bolt Brake Flange Item # 8-393-6UC3-A. It uses inner bearing 25580 and outer bearing 02475. This hub is compatible with 12-1/4 by 2-1/2 inch brakes # 23-428-429 which have a 4-bolt mounting pattern.
    view full answer...
  • Comparing Dexter Hub and Drum Assemblies 8-285-11 and 8-393-4UC3
    You will experience some reduced braking power when using the Dexter Trailer Hub and Drum Assembly # 8-393-4UC3 with 12-1/4 x 2-1/2" brake assemblies compared to the # 8-285-11 with 12-1/4" x 3-3/8" brake assemblies. Between the two I recommend going with the # 8-285-11 along with bearings # 25580 and # 02475, grease seals # RG06-070, lug nuts # 6-53, and grease caps # rg04-120. For brakes I recommend the self adjusting braking assemblies # 23-434-435. Since you mentioned your axle does...
    view full answer...
  • Grease Seal Recommendation for 7,200 lb Dexter Hub
    The 7,200 lb Dexter hub is the part # 8-393-4UC3 which takes the grease seal part # 10-63.
    view full answer...
  • Can Dexter Hub & Drum 8-393-4UC3 be Used as Oil Bath Hub
    If you prefer an oil bath, you can do so with the Dexter Trailer Hub and Drum Assembly for 7,200-lb Axles Manufactured After 1999 # 8-393-4UC3. What you would need are the Unitized Oil Seal # 10-63 and Oil Cap, Plug and O-Ring for Dexter 7-9K Trailer Axles # RG04-230. Having said that, I recommend sticking with grease as opposed to oil. While oil can be less maintenance, they are both prone to leaks and don't keep water out of hubs as well as a grease cap. The issue with this is that...
    view full answer...
  • Replacement Hub and Drums For PJT Trailer With 008-393-03 Installed
    Thanks for all of the information on your PJT Trailer! Based on your drum part number you have a 12-1/4" Drum that is oil bath. The Dexter # 8-393-4UC3 is almost right, but it is designed for grease and not oil. You will need the # 8-393-4UC3 and oil seal # 10-63 for each hub. This hub does not include the bearings so you will also need new inner bearing # 25580 and outer bearing # 02475 for each hub. If you need replacement brakes now or in the future you will need # 23-428-429 for...
    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 Jeff D
Installed by:
Jeff D
Employee Kevin C
Installed by:
Kevin C
Employee Adele M
Updated by:
Adele M
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Noah M
Updated by:
Noah M
Employee Thomas T
Video by:
Thomas T

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