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  1. Trailer Hubs and Drums
  2. Dexter
  3. 5 on 4-1/2 Inch
  4. For 2000 lbs Axles
  5. Hub with Integrated Drum
  6. 12 Inch Wheel
  7. 13 Inch Wheel
  8. 14 Inch Wheel
  9. 14-1/2 Inch Wheel
  10. 15 Inch Wheel
Dexter Trailer Hub and Drum Assembly for 2,000-lb Axles - 7" - 5 on 4-1/2

Dexter Trailer Hub and Drum Assembly for 2,000-lb Axles - 7" - 5 on 4-1/2

Item # 8-257-5UC3
Retail:$248.58
Our Price: $177.52
You Save: $71.06
Trailer Hubs and Drums
Shipping Weight: 19 lbs
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Install this hub-and-drum assembly on your trailer. For electric or hydraulic brakes. Fits 2,000 axles with BTR spindles. Inner bearing (L44649) and race, outer bearing (L44649) 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 2,000-lb Axles - 7" - 5 on 4-1/2 part number 8-257-5UC3 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (39)
  • Q & A (0)
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Dexter Trailer Hubs and Drums - 8-257-5UC3

  • 5 on 4-1/2 Inch
  • For 2000 lbs Axles
  • Hub with Integrated Drum
  • 12 Inch Wheel
  • 13 Inch Wheel
  • 14 Inch Wheel
  • 14-1/2 Inch Wheel
  • 15 Inch Wheel
  • Standard
  • 1/2 Inch Stud
  • L44649
  • L44649
  • Dexter

Install this hub-and-drum assembly on your trailer. For electric or hydraulic brakes. Fits 2,000 axles with BTR spindles. Inner bearing (L44649) and race, outer bearing (L44649) and race, grease seal, grease cap, wheel bolts, and lug nuts included.


Features:

  • Trailer hub-and-drum assembly provides surface area for brake shoes to grip when brake is activated
    • For use with electric brakes only
  • Sturdy iron construction
  • Bearings, races, grease seal, grease cap, wheel bolts, and lug nuts are included
  • Hub and drum are made in the USA


Specs:

  • Application: 2,000-lb trailer axles with BTR spindles
    • Works with 7" x 1-1/4" brake assembly
  • Wheel size: 12" - 15"
  • Bolt pattern: 5 on 4-1/2"
  • Wheel bolt diameter: 1/2"
  • Weight capacity: 1,000 lbs


Bearing, Race, and Seal Information

  • Bearings (included)
    • Inner bearing: L44649 (1.063" inner diameter)
    • Outer bearing: L44649 (1.063" inner diameter)
  • Races (included)
    • Inner race: L44610
    • Outer race: L44610
  • Grease seal (included): 10-9
    • Inner diameter: 1.500"
    • Outer diameter: 1.987"

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"


K08-257-91 Dexter 7" Hub and Drum Assembly for 2K Axle with Hardware - 5 on 4-1/2

Replaces 8-257-5UC3





Customer Satisfaction Score:


Customer Reviews

Dexter Trailer Hub and Drum Assembly for 2,000-lb Axles - 7" - 5 on 4-1/2 - 8-257-5UC3

Average Customer Rating:  4.6 out of 5 stars   (39 Customer Reviews)

Install this hub-and-drum assembly on your trailer. For electric or hydraulic brakes. Fits 2,000 axles with BTR spindles. Inner bearing (L44649) and race, outer bearing (L44649) and race, grease seal, grease cap, wheel bolts, and lug nuts included.

by:

Very satisfied with the form, fit, and function of these drums. Very substantial, thicker material and larger overall surface areas as compared to my originals (see attached picture). The trade-off is that they weigh more - increasing dry weight on a small (Hélio O2) tear-drop trailer must be monitored, those added pounds take away from safe and prudent cargo carrying capacity.



by:

The staff at eTrailer.com are very helpful and knowledgeable - ask if you're unsure. I originally ordered through the Internet and received the wrong products - because I neglected to ask questions. The return went smooth, but I had to pay for it (my error). The next round arrived well packaged (externally), but there was thin packing tape all over the outside of the hubs and some on the inside rubbing surface of the hubs. It took some doing to get it all off. There was a little rust on the non-contact surfaces of the hub as well as on the brake housing. On the brake housing, you can see some rust in the pic. Looks like it may have been rebuilt. This doesn't seem to have any effect on its operation though. Seals, Races & Bearings are super clean and fit perfectly. I installed these brakes onto the existing '4.5 on 5' flange on a 2000 pound axle (on a 2004 Aliner LX Classic Pop-up trailer). It came with the bolts to attach to the flange, but be sure to order the adjuster grommets, lock washers and 7/16x20 fine thread nuts, since it doesn't come with them. Once I got the wiring set up properly, it works exactly as it should. I prewired the setup prior to delivery. My error was that I assumed the only wire I'd need to run was the blue (brake) wire, but there are two wires on the brake housing as you can see in the picture. Either one goes to the blue (doesn't matter which) and the other attaches to the neutral (white) wire that goes back through the trailer's main wiring harness. Simply attaching the wire to the trailer frame (ground) like I initially did as seen in the picture looked like a good clean setup and easy solution to my one-wire mistake. Unfortunately, it DID NOT WORK. The secondary (neutral) wire must be detected by the tow vehicle's brake controller. Plan ahead and buy the blue and white primary wires (20 feet of 14 or 16 gauge will work) and run them next to each other before hand. Be sure to house the wires in 'plastic split loom tubing' so they don't rub against anything and zip tie them to the frame, so they're not hanging or in the way of anything. Happy braking. :-)



by:

I submitted a review of this item via a prior purchase. When I purchase the first drum I mistakenly assumed I was getting two drums (similar to the 7" Brake Kit Item # 23-47-48 I purchased at the same time). This second review is because I had to buy a second drum separately after realizing my mistake. Note: I recognize this was my mistake - nothing against etrailer, who are and always have been awesome.



by:

etrailer shipped very fast and had great customer service! The only complaint I have is directed at Dexter for not securely packaging the heavy drums. During shipment two bearing caps and one bearing seal was damaged.



by:

Item was exactly what I needed. Installation was smooth and easy.



by:

I used these Dexter hub/drum assemblies along with the etrailer branded 7" brake kit to add brakes to my 2015 TAG Max and I couldn't be happier with the performance. etrailer customer service rectified a small issue quickly and professionally. etrailer will be my first stop when looking for trailer supplies in the future.



by:

I have received the product ordered, but have not installed. Parts received look to be the correct items. Due to bearing problems on our camper during a recent trip I need to replace the hub on one side and will replace the bearing on the opposite side.
Lisa was very helpful with the ordering process, made sure the parts were the correct items, and suggested ways in improve the ordering process. The parts were packaged properly and received without damage. She indicated the parts would be here at a certain time, and they were. The entire ordering process was seamless.
Now if I can just her to install the components, life would be good!

Dennis

10/15/2019

Just finished a 4 thousand mile camping trip without a problem.



by:

etrailer products and service are excellent! With their helpful videos and staff (plus a little help from Curt Manufacturing and our teardrop trailer manufacturer (CampInn)) I was able to install electric brakes on the trailer, and a controller in my vehicle by myself. I had never installed electric brakes before. Everything works perfectly!



by:

Great customer service and delivery. The hubs were exactly we expected and were easy to install and performed perfectly on an 11, 400 mile trip around the USA. I put the hubs w/brakes and controller on an Aspen "Classis" tent trailer being pulled behind a GL 1800 Honda Goldwing and loaded to the max. These products made for a much safer trip and greater peace of mind.

Thanks!



by:

Drum and brake arrived safe and sound, was well packed, and worked like a champ. I used the shotgun approach for a brake grabbing problem on the right side of my very small motorcycle camper trailer. I tried everything to fix it, needed quick repair to go on a trip, so ordered the whole thing (drum, brakes, bearings incl.).

Glad I did, as there is no more grabbing and overheated drum, AND better gas mileage.

I never found out for sure what the original problem was, but now suspect bearings since they appeared pretty sloppy in their housing. I assume the worn bearings caused the drum to move around on the spindle, causing grabbing from time to time.



by:

This drum assembly was perfect for my trailer axle. It came with bearings and seals. The inner seal was damaged during shipping. I called etrailer and they sent me out a replacement in no time at all. Great customer and tech service!



by:

Great hub, drum and lugs - works great. I had couple of bent lugs and this fixed that issue.

Etrailer Expert

Mike L.

6/27/2018

If the wheel studs werent bent from hitting a pothole or road debris, Id recommend checking the loaded weight of the trailer to ensure the axle isnt overloaded.



by:

Superb hub and an excellent replacement for my 1997 Coleman Fleetwood Bayports popup camper that I am close to finishing a restoration process on. They fit perfectly! Very happy to purchase an excellent product from the fastest shipper I have ever come across. I am blown away by the professionalism with this company!
Thanks



by:

Great service by Tonya S, when sourcing my product, she was very knowledgeable and helpful with the products I was looking for. Pricing was great, delivery was ahead of schedule, tracking for the delivery was very detailed every step of the way. Thankyou Tonya, would not hesitate reusing etrailer, highly recommend them.



by:

I have come to expect excellent service from etrailer, and this product and prompt service was no exception. I will probably never deal with another company for my trailer parts unless they don't carry what I'm looking for. Keep up the fine work and wonderful service!



by:

Brake Kit was easier to install than I anticipated!! Came with no instructions but etrailers videos were straight forward.



by:

Ordered a hub for my Hoosier pontoon trailer. I have order from trailer in the past and am very satisfied with their customer service and quality products.



by:

Package on time, but was open, top cardboard sticking up. Everything seems to still be there. Will hope installing goes OK.



by:

7 inch brake assembly and hubs arrived on time, and are already installed. Easy trouble-free. Quality product.



by:

Great product; received one day earlier than promised! Great customer service from Caleb. Fits perfectly on my popup camper.



by:

Order received as ordered. Michelle was great contacting me letting me know a part that was ordered would be delayed and found an in stock replacement part.



by:

All parts other than hub were damaged

Etrailer Expert

Brooke M.

10/14/2021

Thank you for bringing this to our attention. Our customer service team should be reaching out to you in the near future.



by:

Thank you I appreciate both of my Hubbs I have not installed them yet but everything looks brand new and it looks about the same to me I will let you know more if they do not match I will let you know soon as I get a chance to deal with it but thank you very much I did receive them



by:

good quality. havenotusedthem



by:

Product was what I needed. I called late on a Sunday afternoon and the parts were shipped very early Monday at 4:00 AM. All questions were answered and suggestions were appreciated.


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Show More Reviews

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

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    Thanks for the picture of your axle as I can see a brake mounting flange which means brakes can be added. Now what we have to do next is determine you axle capacity so we can pick out the correct hub/drums and then from there the correct brake assemblies. Also, what trailer wiring does your Sienna have? You'll need a brake controller to control the trailer's brakes.
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  • Can Electric Drum Brakes be Added to a 1993 Jayco 1206 Trailer
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  • Replacement Brake Shoes and Grease Seal for Use With a Dexter 8-257 Hub Drum
    If your hub drum is marked Dexter 8-257, it should be the same as our # 8-257-5UC3 (standard) or # 8-257-5UC3-EZ (EZ Lube) hub drums. As long as you have 7 inch by 1-3/4 inch Dexter brake assemblies, the # BP04-050 brake shoes would be the appropriate replacement pieces for your setup. If you have a standard # 8-257-5UC3 hub drum, you could use grease seal # 10-9. If you have the # 8-257-5UC3-EZ hub drums with the EZ lube zerk fitting, I would recommend a 10-60 double lip seal, which...
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  • Lug Nut Torque Spec for a 1/2 Stud with Coned Lugs on a 15 in Steel Wheel
    I attached a chart that has all of the recommended lug nut torque specs for trailer wheels. Based on your studs being 1/2 inch, your wheels being 15 inches in diameter, and your lug nuts being coned you would want to torque your lug nuts to 90-120 ft lbs of torque. It's recommended that you tighten them in a star pattern. And then recheck them after about 50 miles of driving. I've lost several lug nuts by failing to recheck them after driving so I would strongly recommend you check yours...
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  • Recommended Torque for 7/16 Lug Nuts
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  • Torque Specification for Lugs Nuts on 5/8-Inch Stud on Dexter Hub
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  • Trailer Turn Signals and Running Lights Work Until Brakes are Applied and Brake Lights Never Work
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