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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. 10 Inch Wheel
  7. 12 Inch Wheel
  8. 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: $133.87
You Save: $114.71
Trailer Hubs and Drums
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Shipping Weight: 19 lbs
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Dexter Trailer Hub and Drum Assembly for 2,000-lb Axles - 7" - 5 on 4-1/2 For 2000 lbs Axles 8-257-5UC3
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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 1-833-496-1390 for expert service.
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  • Reviews (32)
  • Q & A (0)
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  • Why etrailer?

Dexter Trailer Hubs and Drums - 8-257-5UC3

  • 5 on 4-1/2 Inch
  • For 2000 lbs Axles
  • Hub with Integrated Drum
  • 10 Inch Wheel
  • 12 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:  4.5 out of 5 stars   (32 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:

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:

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:

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:

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




by:

good quality. havenotusedthem




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!


Comments
Just finished a 4 thousand mile camping trip without a problem.
Dennis - 10/15/2019


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:

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:

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:

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:

Great people to deal with prompt friendly service




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 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:

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


Comments
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.
-- Etrailer Expert Mike L - 06/27/2018


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:

All parts other than hub were damaged


Comments
Thank you for bringing this to our attention. Our customer service team should be reaching out to you in the near future.
-- Etrailer Expert Brooke M - 10/14/2021


by:

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




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:

I received my order in a timely matter and the product was what i ordered.




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:

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:

Quality is excellent!! Thanks!!




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

  • Do Dexter Trailer Hub and Drum Assembly for 2,000 lb Axles Fit Same Wheel Sizes
    You are correct that these two hub and drums are exactly the same but one has a standard grease cap and the other has an E-Z Lube grease cap for E-Z Lube spindles, so both will fit 12" to 15" wheels. The correct one for you will simply depend on if you have an E-Z Lube axle or not: - Dexter Trailer Hub and Drum Assembly for 2,000 lb E-Z Lube Axles # 8-257-5UC3-EZ - Dexter Trailer Hub and Drum Assembly for 2,000 lb Axles # 8-257-5UC3
    view full answer...
  • How To measure a Spindle to Determine the Correct Grease Seal
    It is possible that the wrong grease seal was on the spindle/hub. The seal associated with hubs that take inner and outer bearing L44649 is the 10-9 seal. To determine which is correct you will need to measure the spindle where the seal goes. The measurement needs to be as accurate as possible so you will need to use dial or digital calipers. I included a picture that shows where to measure on the spindle. Measuring the actual inner diameter of the seal is difficult because its rubber...
    view full answer...
    Image 1 for
  • What Should Trailer Lug Nuts be Torqued To on a Small Trailer with 4.80-12 Tires
    You likely have 1/2 inch studs on the trailer hub. For 1/2 inch you will want to torque the lug nuts to 75 - 85 foot pounds. For 9/16 inch lug nuts torque them to 135 - 145 foot pounds. And for 5/8 inch lug nuts torque them to 175 - 225 foot pounds.
    view full answer...
  • 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...
    view full answer...
    Image 1 for
  • Recommended Lug Nut Torque For Dexter Trailer Hub and Drum Assembly # 8-257-5UC3
    The Dexter Trailer Hub and Drum Assembly, part # 8-257-5UC3, you have referenced will come with a 1/2-inch cone seat lug nut. When attaching the wheel to the hub and drum assembly the 1/2-inch lug nuts should be torqued to 75 to 85 ft. lbs.
    view full answer...
  • Lug Nut Torque for 13 Inch Trailer Wheels on a 2014 KZ Sportsman Classic
    I am assuming that the lug nut/stud size for your trailer wheels are 1/2 inch. That would mean you would need to torque the lug nuts to 75 to 85 foot pounds. There might even be a spec listed in the manual for your 2014 KZ Sportsman Classic. If they happen to be 7/16 then you would torque them to 55 to 65 foot pounds. And if they happen to be 9/16 then you would torque them to 95 to 115 foot pounds.
    view full answer...
    Image 1 for
  • Torque Specs for the Lug Nuts on a 1999 Bonair 700 Tent Trailer
    The torque specs for the lug nuts on your 1999 Bonair 700 Tent Trailer is going to depend on the stud size, lug nut type, wheel size, and wheel material. Once you gather this information you can use the attached chart to find the correct torque specs. I do not have the above information on your trailer so you will need to do a bit of investigating as I cannot give you an exact figure.
    view full answer...
    Image 1 for
  • Torque Specification for Lugs Nuts on 5/8-Inch Stud on Dexter Hub
    The appropriate torque spec for any application will vary depending on the construction of the wheel as well as on the stud size. I suggest checking the wheels you're using to see if their manufacturer has a suggested torque rating. Steel trailer wheels, for example, will usually have a higher torque spec than an aluminum wheel on a vehicle. In general, 1/2-inch studs typically have a torque range of 75 to 85 foot pounds; 9/16-inch studs range from 135 to 145 foot pounds; 5/8-inch studs...
    view full answer...
    Image 1 for
  • Torque Specs for Trailer Wheel Lug Nuts
    That really depends on the material of your rim and the diameter of your wheel studs. If you have a steel wheel with a 1/2 inch stud you would use 90-120 ft/lbs. Steel with 9/16 inch stud 120-140 ft/lbs. Aluminum with 1/2 inch stud 90-100 ft/lbs. Aluminum with 9/16 inch stud 120-140 ft/lbs.
    view full answer...
  • What is the Correct Torque Specification for Trailer Wheel
    Torque specs for trailer and vehicle wheels are based on the size of the wheel stud, the type of lug nut, and the material the wheel is made of, steel or aluminum. For example, the linked chart shows you the varying torque values for a range of larger wheel sizes based on these factors. Without knowing more about your hubs and wheels I cannot give you a specific torque value, but it is likely that that spec would fall into the range of 75-80-ft-lbs.
    view full answer...
    Image 1 for
  • How to Pick Out Replacement Hub for an Old Horse Trailer
    When you go to pick out a replacement hub for a trailer you need to do a bit of homework before you buy them. You need to determine what hub currently is on the spindle so you can find one that will replace it. Hubs aren't universal fit items so you need to make sure you get the correct one. The first thing you will need to know is the bolt pattern of your hubs. This is so you get a hub that is compatible with your wheels. I attached an FAQ article on determining bolt pattern for you to...
    view full answer...
    Image 1 for Image 2 for
  • What are the Lug Nut Torque Specs on a Dexter 13x4.5 Vintage Trailer Wheel
    The amount of torque used on a lug nut is going to depend on a few different factors. I have included a chart with lug nut torque information that you can follow. Please note that the specs are different depending on the material of the wheel and the size.
    view full answer...
    Image 1 for
  • Which Replacement Hub Drum for 2007 Rockwood HW256 Pop-Up
    I don't have reference information that would tell me the diameter of the wheel studs or the wheel bolt pattern used by your Rockwood Pop-Up. A master catalog that shows which OEM parts were used by the various RV and Camper manufacturers would be a Godsend, but it just doesn't exist. However, with some assistance from you, we can find the parts you need. It sounds like you're looking to replace your hubs, is that correct? To determine which hubs you need, I'll need some additional information....
    view full answer...
    Image 1 for
  • Recommended Torque Values for Lug Nut on 1/2-Inch Wheel Stud with Steel Wheel
    Torque value ranges for lug nuts depend primarily on the diameter of the stud and the material the wheel is made of, 1/2-inch studs and a steel wheel in your case. In this instance a torque range of 90 - 120-ft/lbs is appropriate.
    view full answer...
  • Determine Lug Nut Torque for Trailer Rim
    I attached a chart that has the lug nut torque specs for trailer wheels. You will notice that there is more information required to give you the spec for your application. The stud size is needed to know what the recommended torque is. The most common stud size is 1/2 inch so most likely the spec of 75-85 ft lbs of torque would be the right one to use.
    view full answer...
    Image 1 for
  • Lug Nut Torque Setting for 14-Inch Steel Trailer Wheels on 1/2-Inch Wheel Studs
    Wheel torque specs vary based on stud diameter, wheel diameter and wheel material. The linked chart shows you commonly recommended torque specs for a range of studs and wheels. For 1/2-inch wheel studs and a 14-inch steel trailer wheel you will use a torque range of 75-to-85-ft-lbs.
    view full answer...
    Image 1 for
  • Recommended Lug Nut Torque Specs on 6,000 Pound Trailer Axle with 1/2 Inch Studs
    It sounds like you're looking for the torque specs for the lug nuts on a 6,000 pound axle. For a hub with 1/2 inch studs, 90 to 95 foot-pounds is standard.
    view full answer...
  • Troubleshooting Wheel Wobble on 1976 Dodge 28-Foot Motorhome
    A dually wheel on a motorhome or trailer that wobbles usually indicates either damage to the wheel/rim, to the hub or incorrect lug nut torque. If the rear wheels are pigeon-toed (meaning the right wheels angle to the left and the left wheels angle to the right) then this suggests a bent/damaged axle. Lug nut torque varies depending on several factors including wheel stud size, wheel material and wheel size. The linked chart gives you the recommended torque range for a variety of combinations....
    view full answer...
    Image 1 for
  • Torque Rating for Spindle Nut on Trailer Hubs
    When our installers replace a trailer hub, there isn't a set torque spec used when tightening the spindle nut. The hub is placed on the spindle, making sure the inner and outer bearings are correctly seated. The spindle nut is then run down until you start feeling resistance. At that point, spin the hub and check for end play (wobble). If the hub still seems a bit loose, you can run the nut down a bit more. As you'll see in the video I've linked to, tightening the nut is something you'll...
    view full answer...
  • Is Dexter Hub and Drum Assembly 8-257 Available
    Hub and drum assembly # 8-257-5UC3 is the correct replacement for you. If you look at the picture of the hub/drum I have included you will see where it does indeed read 8-257. I have also included a link to a video of this assembly for you.
    view full answer...
    Image 1 for
  • What are the Torque Specs for a Trailer that Used Wheel Bolts Instead of Lug Nuts
    I spoke with our resident tire and wheel expert and he said that for wheel bolts you will just follow the same torque specs as you would for a lug nut of the same size. Take a look at the chart I have included with lug nut torque specs. Based on your hub, tire, and wheel sizes you likely have 1/2 inch wheel bolts. For 1/2 inch torque them to 75-85 foot pounds. If they are not 1/2 inch then follow the included chart.
    view full answer...
    Image 1 for Image 2 for
  • How Tight to Get Spindle Nut on Hub of Trailer
    When our installers replace a trailer hub, there isn't a set torque spec used when tightening the spindle nut. The hub is placed on the spindle, making sure the inner and outer bearings are correctly seated. The spindle nut is then run down until you start feeling resistance. At that point, spin the hub and check for end play (wobble). If the hub still seems a bit loose, you can run the nut down a bit more. As you'll see in the video I've linked to, tightening the nut is something you'll...
    view full answer...
  • Lug Nut Torque Chart for Trailer Wheels
    In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.
    view full answer...
    Image 1 for
  • Can Electric Trailer Brakes be Used with Hydraulic Brake Hub and Drums
    Some hub/drum assemblies can accept either electric or hydraulic brakes and some can only accept one or the other. It has to do with the amount of space inside the drum itself. The Trailer Hub and Drum Assembly, # 8-257-5UC3, is designed for electric brake assemblies. On many drums you can use either electric or hydraulic brakes. Since you are switching over to electric brakes it would be best to also change the hub/drum assemblies to some that are made specifically for electric brake...
    view full answer...


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