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  1. Trailer Hubs and Drums
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  3. 8 on 6-1/2 Inch
  4. For 5200 lbs Axles
  5. For 6000 lbs Axles
  6. For 7000 lbs Axles
Dexter Trailer Hub and Drum Assembly - 7K E-Z Lube Axle - 8 on 6-1/2 - Pre-Greased - 1/2" Stud
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Dexter

Dexter Trailer Hub and Drum Assembly - 7K E-Z Lube Axle - 8 on 6-1/2 - Pre-Greased - 1/2" Stud

Part Number: 42866UC3-EZ
In Stock
$179.01
Trailer Hubs and Drums
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Install this hub-and-drum assembly on your trailer. Fits 5,200-lb to 7,000-lb E-Z Lube axles. Inner bearing (25580) and race, outer bearing (14125A) 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 - 7K E-Z Lube Axle - 8 on 6-1/2 - Pre-Greased - 1/2" Stud part number 42866UC3-EZ can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Dexter Trailer Hubs and Drums - 42866UC3-EZ

Highlights

  • For 5,200–7,000-lb Axles: Fits #42 E-Z Lube spindles with inner 25580 and outer 14125A bearings.
  • Ready for Electric or Hydraulic Brakes: Works with 12" x 2" drum brake assemblies.
  • 8 on 6-1/2" Bolt Pattern: Matches common 16"–17-1/2" trailer wheels using 1/2" studs.
  • Pre-Greased and Fully Assembled: Includes bearings, races, grease seal, cap, bolts, and lug nuts.
  • E-Z Lube Cap for Simple Maintenance: Add grease through the zerk fitting—no disassembly needed.
Made in USA

Features to know about

Heavy-Duty Hub and Drum Assembly for Demanding Loads: Fits 5,200- to 7,000-lb Axles

When you’re hauling serious weight, you need braking components that can take it. This Dexter hub-and-drum assembly is built for 5,200- to 7,000-lb E-Z Lube axles and designed to handle a 3,500-lb load per hub. The 12" x 2" drum provides solid surface area for your brake shoes, delivering steady, reliable braking whether you’re running electric or hydraulic systems. With sturdy iron construction and an 8 on 6-1/2" bolt pattern, it’s a rugged fit for heavy-duty use day after day.

Simplifies Bearing Maintenance: E-Z Lube-Compatible Grease Cap

Keeping bearings lubricated shouldn’t mean tearing everything apart. The grease cap on this hub works with Dexter’s E-Z Lube spindles, letting you add fresh grease through the zerk fitting without disassembly. Pop out the rubber plug, connect your grease gun, and pump it in—it flows directly to both inner and outer bearings. That easy access helps prevent corrosion and keeps the hub running smooth for the long haul.

Ready to Install Right Out of the Box: Fully Pre-Greased Assembly

This hub comes pre-greased and ready to go, saving you the time and mess of hand-packing bearings. The inner bearing (25580) and race, outer bearing (14125A) and race, grease seal, grease cap, wheel bolts, and lug nuts are all included and already in place. Just slide it onto your #42 spindle and torque it down—it’s that straightforward.

Built for Dependability and Fit Accuracy: Precision-Matched Bearing and Seal Components

Tight tolerances mean smooth operation and long life. The included components—inner bearing 25580 (1.75" ID), outer bearing 14125A (1.25" ID), inner race 25520, outer race 14276, and double-lip grease seal GS-2250DL (2.25" ID, 3.376" OD)—are matched to work perfectly together. Each part seats precisely for proper load distribution and minimal wear, giving you confidence every time you tow.

Strong Construction for Long Service Life: Iron Hub and Drum

Dexter’s cast-iron hub and drum withstand repeated braking heat cycles and heavy use without warping. The material holds up under load and resists scoring for consistent braking performance. When you need a durable, serviceable hub-and-drum assembly that’s easy to maintain and built for years of work, this one gets the job done.

Specs

Application

  • For Axles: 5,200-lb to 7,000-lb E-Z Lube trailer axles with #42 spindles
  • Brake Compatibility: Works with 12" brake assembly

Dimensions

  • Drum dimensions: 12" diameter x 2" wide
  • Grease cap flange diameter: 2.72"

Bolt Pattern and Studs

  • Bolt pattern: 8 on 6-1/2"
  • Wheel stud diameter: 1/2"

Weight and Capacity

  • Weight capacity: 3,500 lbs

Bearing, Race, and Seal Information

  • Inner bearing (included): 25580 (1.75" inner diameter)
  • Outer bearing (included): 14125A (1.25" inner diameter)
  • Inner race (included): 25520
  • Outer race (included): 14276
  • Grease seal (included): GS-2250DL
  • Grease seal inner diameter: 2.25"
  • Grease seal outer diameter: 3.376"
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"

K08-219-9B Dexter 12" Hub and Drum Assembly for 5.2K to 7K with Hardware - 6 on 5-1/2 - EZ Lube

Replaces 42866UC3-EZ





Customer Satisfaction Score:

Ratings & Reviews

4.6

371 reviews
Review sort icon
Install this hub-and-drum assembly on your trailer. Fits 5,200-lb to 7,000-lb E-Z Lube axles. Inner bearing (25580) and race, outer bearing (14125A) and race, grease seal, grease cap, wheel bolts, and lug nuts included.

by:

Works as needed. Only issue is getting grease caps on, frustrating installing these.



by:

These hubs are way beefier than the later versions sold at Funtown RV and cheeper.



by:

Everything I needed I found at etrailer and everything fit perfectly!! Customer service was excellent!!



by:

Pulled right from the box and slapped it on. Multiple options for dust cover and locking the nut on the spindle which is nice. Now I have options. Like the multiple washers and nuts for multiple different axle types. Liked the Dexter made in USA. Everything was great will buy again.



by:

Everything is intact, already packed. Just gives peace of mind to have extra drum with the bearings.



by:

Great product and exact replacement for our 42ft Keystone Montana High Country 375FL.
Fast shipping and correct part is extremely important as we are full time RVers and with limited time.
I've ordered several items over the years and always received great service.



by:

Five star. shipping was slow. Product was great 14 K 14 plies under 2000 pounds independent suspension. Low fast and sassy. Yep that’s how I build them.



by:

Dexter assy.(or a darn good dup) all needed keepers nuts and pin included. Well greased. Will purchase again



by:

Another low cost & perfect order. If you’re NOT using these guys for all your trailer needs, you’re wasting your time and money



by:

Thanks so much etrailer for making me feel so much better/safer about carrying heavier loads in my trailer. Katrina also went the extra mile when it came to customer service and patience with my order. I had 15" six lug hub and drum assembly which held all I could load on them, like I said I just did not feel safe so I went with this hub and drum assembly which came with all necessary items for the install, and it allowed me to put 16" tires with a heavier weight rating. Very pleased.



by:

I got them in on time I had to go with these more expensive ones otherwise I would’ve had to wait until August to get the other ones I wanted. I think the only difference are it’s got washers and nut. otherwise, it would have got a five star.



by:

Good quality and well made. Easy installation and it was a perfect replacement.



by:

Good product, need to ensure dust cap stays place!



by:

The packaging was damaged on one, dessicant had entered the bearing area. But once I cleaned it all out and regreased it, it was great.



by:

Easy installation over new brakes. Exact replacement.



by:

This is the second one I bought, I like that they’re is no greasing involved.everything you need to finish the job.the bearings are packed and ready to go. The people at etrailer will make sure you get the right parts. I’ve got a lot of parts from them and never have been disappointed.



by:

Fast shipping and easy install. The protective grease covers popped off in shipping so did not do what they were designed to due. Had to clean the hub up.



by:

Grease cap damaged/unusable and this like dexter item dimensions are all different. So long as the wheels line up and the drum contacts the brakes pad properly I’ll let it ride. And the like new but missing parts drum is damaged and the bearing race is not seated

Christopher profile picture

Christopher

5/12/2024

Year out review all is good and any issues resolved



by:

Great product but the packaging is not good enough for the weight of the drums. 2 of the 4 boxes were missing the hardware. They need to be double boxed. I was able to reuse the original hardware. Dexter makes quality products.



by:

Installed easily and nicely greased. Only issue is that the hubcaps are slightly oversized and one was actually oblong in shape. I used the caps from the old hubs since I dented the new caps trying to install them.



by:

Good product. Really like the install and go idea. I had 2 issues with new hub on my trailer. One, once the axle nut was installed, with the washer provided or my old washer, the cut out for cotter key on nut didn't line up with cotter key hole on axle. If I went
to next opening, way too tight, if I went out, way too loose. I ended up using a thin washer and that worked great. Second issue, the dust cap. I have put many many dust caps on in the past, but this thing was near impossible. It was the solid one provided. Ended up denting it trying.
I then tried the hole in the center one provided, Same thing. Would not not fit easily. I finally did get solid one in but it's all dented up! Wouldn't hurt my feelings if you could send me a new solid style dust cap? Overall good purchase and e-trailer in general is an awesome place to purchase trailer stuff!!! Thanks for your continued professionalism!



by:

The hubs fit good, easy install. Been a year now and prob have put 400 miles on my Heartland Cyclone triple axle with all 6 hubs being replaced at once



by:

Good job etrailer on shipping! Got them out to me fast. Hub and drum assembly worked as advertised. Took about 2 hrs to put break assembly and hub assembly on per axel. They came assembly with grease one of them looked like it had just the bear minimum amount, to me that was nothing just put alittle more that's all.



by:

The delivered product was wrong and the customer service (including supervisor) was horrendous. Multiple weeks in our peak concrete season were lost, while we had the back and forth necessary to receive the correct parts. Even after sending detailed pictures, illustrating the differences between the parts ordered and those received, we were sent the wrong parts as replacements for the initial order. The right parts were sent, only after we contacted the manufacturer.



by:

OEM is the best way to go. Dexter hub and drum assembly comes with ever think you need to get you axle back to new. I replaced the brakes the drum by only having to order 2 parts and it made it fast and easy to do.


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

  • What Is The Difference Between 7K Hub/Drums From etrailer And Dexter?
    Hi Phil! The main difference between the etrailer Easy Grease Trailer Hub and Drum Assembly # AKHD-865-7-2-EZ-K and the Dexter Trailer Hub and Drum Assembly # 42866UC3-EZ is where they are made. Ours are made over seas and Dexter hubs are made here in America. The etrailer option is less expensive though. Other than that, they are both for 5,200 to 7,000 pound axles, use the same # 25580 inner bearing and # 14125A outer bearing, use the same # GS-2250DL seal, have 1/2" studs, are pre-greased,...
    view full answer...
  • Replacement Brake Shoes and Drums for a 2013 Keystone Montana Mountaineer with Dexter 7K Axles
    The correct replacement brake shoes for a 2013 Keystone Montana Mountaineer with Dexter 7,000 lb Nev-R-Adjust Braking Assemblies is going to be the Replacement Shoe and Lining for Nev-R-Adjust 12" x 2" Electric part # K71-675 for the left hand side or part # K71-676 for the right hand side. That said, we also offer the Dexter Nev-R-Adjust Electric Trailer Brake Kit part # 23-464-465 which will save you some work. If you need new hubs/drums, the Dexter Trailer Hub and Drum Assembly part...
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  • Replacement Hub/Drum and Brake Assemblies for 6k Hub with 8 Lug Bolt Pattern
    Hey Tom, we have the correct hub/drum you are looking for with the part # 42866UC3-EZ if you have 1/2 inch wheel studs or the part # 8-219-13UC3 for if you have 9/16 inch diameter studs. Then for brake assemblies you'd just need the part # AKEBRK-7-SA for a set of a left and a right and you'd be set. Basically the 5.2k and up to 7k axles use the same brake components which is why the parts I mentioned say they fit that range of axle capacity.
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  • Are Side-Frame Mount Jacks Available With Different Gear Ratios
    For that I recommend an electric jack set like the Ultra-Fab Deluxe Electric Landing Gear Set # UF17-943010 which has a combined 12,000 lbs of capacity, and offers 38" of lift.
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  • Dexter 7,000 lb Axle Hub and Brake Assembly Recommendation
    Does the spindle look damaged at all? Sometimes bearings can be a pretty tight fit to the spindle but there should be enough clearance to allow the bearing to slip on without needing too much effort. For Dexter 7k axles the bearing surfaces should measure 1.74 and 1.25. You'd want to make sure your spindle matches those diameters. Chances are the spindle may have gotten deformed from overheating and now it's not perfectly round.
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  • Can I Upgrade Trailer Axle From 3,500 lb to 7,000 lb Axle and Keep 14 Wheels
    You can add a heavier axle to the trailer but the rest of the components of your trailer may not be rated for a higher weight capacity such as the suspension components and wheels. If you go from a 3,500 lb axle to a 7,000 lb axle like part # 8327834 you are not going to be able to keep your wheels because more than likely the bearings in the hubs that fit your wheels will not fit the spindle of the new axle. Also the wheels are more than likely not rated for the 7,000 lb trailer weight....
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  • Best Way To Find Replacement Parts For 1999 EZ-Loader Boat Trailer
    Hey Jerry, thanks for reaching out. I can help point you in the right direction, but the VIN doesn't do much good in this case because there isn't a universal database for trailers like there is for motor vehicles. Boat trailer manufacturers just don't list specific build info online. What parts are you looking for specifically? Some parts like hub/brake info I might be able to look up using the casting number from your hubs. For most other parts like leaf springs, tires, fenders, the...
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  • How Tight Should Trailer Bearings Be When Installing on a Spindle
    Trailer bearings can fit pretty tight to the spindle, but they would not ever need to get pressed on. They should not be so tight that you have to really pound on them to fit but they can require a little bit of effort to get them to slide onto the spindle. When installed there should be no play between the inner surface of the bearing and the spindle. I have attached a link to a video that shows how to remove and reinstall trailer hub components you can check out.
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  • Recommended Replacement Straight Axle for a Carry-On Trailer
    Hey Paul, thanks for dropping by! I actually spoke with Dexter and they let me know that you have a 3,500 lb axle with a 93" hub face and 80" spring seat measurement so you could use the Dexter Trailer Axle Beam with E-Z Lube Spindles # 8327864. The only issue I'm running into is that there are no hubs with a 5 on 4 1/2 bolt pattern that fit this axle. To use this axle as a replacement you'd also need to then swap your hubs and brakes with the Dexter Trailer Hub and Drum Assembly # 42866UC3-EZ...
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  • How to Fix a Trailer Leaning Heavily to One Side
    The reason your trailer is heavily leaning to one side is because of the way it's loaded. From the picture, it appears that you have much more equipment on the right side than you do the left side. This uneven loading has caused the leaf spring to wear down quicker overtime further worsening the problem. Unfortunately, you really only have two options to fix the problem which would be to either reorganize how equipment is loaded on the trailer or replace the suspension components with...
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  • Replacement Hubs and Brakes for 2021 Keystone Montana High Country
    Hey John! For a replacement hub and drum assembly you can use the Dexter Trailer Hub and Drum Assembly # 42866UC3-EZ you were looking at. Then for brakes you need the Dexter Nev-R-Adjust Electric Trailer Brakes # 23-464-465. Where are you headed once you get the drums and brakes replaced on your Montana?
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  • Bearings and Seals for 2021 Jayco Northpoint 377RLBH
    Hey Kenneth! Thanks for sending me your axle tag and serial number. According to Dexter you have a 2.25" inner diameter grease seal so you need the Bearing Kit, 14125A/ 25580 Bearings, 10-36 Seal # BK3-200. If you want the Dexter kit it is the # DX58ER.
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  • Hub/Drum and Upgraded Equalizers for 2018 Jayco Seismic 4212
    Hey Kris, the hub/drum replacement you'll need is the part # 42866UC3-EZ for your 2018 Jayco Seismic 4212. Then for brake assemblies you would want the part # AKEBRK-7-SA. Then for the MORryde kit you'd want the part # MR39ZR for the equalizers. Then for the shackle kit the part # MR26ZR is what you'd need.
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  • Replacement Axle, Brake Assemblies, And Hubs And Drums For M1101 Trailer
    Based on my research your M1101 trailer has a GVWR of around 3400lbs, so for a replacement axle I recommend taking a look at the Timbren Heavy-Duty Axle-Less Trailer Suspension - Straight Spindle - Off-Road Tires - 3,500 lbs # ASR35HDS01 which will bolt to the frame of your trailer and replace your current axle and suspension setup. The # ASR35HDS01 is designed for wide off-road tires meaning it would give you the extra clearance you need to run the typical wide off-road tires found on...
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  • Trailer Hub & Spindle For 7,000 lb Axle With 12 Inch Electric Brakes
    First, thanks for all that detailed information, it was very helpful. And we can get you parts for your trailer, though the issue is that there isn't an available hub for your spindle due to what you mentioned - the uncommon 501349 bearing, which is for older agricultural spindles. There also isn't a 7,000 lb-rated hub with a 6 on 5-1/2" bolt pattern to go with your 7k-rated Dexter Nev-R-Adjust Electric Trailer Brake Assembly # 23-464 and # 23-465. So what that means is you'll have to...
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  • Electric Brake Assembly Replacements for Rockwell American 4704-L and R Assemblies
    The Rockwell American 4704-L and R brake assemblies that you have are standard 12 inch by 2 inch trailer brake assemblies that we do offer replacements for like with the Electric Trailer Brake Assembly - 12" - Left Hand - 5,200 lbs to 7,000 lbs, # AKEBRK-6L for the left hand side and part # AKEBRK-6R for the right hand side.
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  • Can I Upgrade from 6 Lug to 8 Lug Wheels to Help Increase Weight Rating of my Trailer?
    Because the total weight capacity of your trailer is limited by the lowest rated component, your axle capacity won't be increased by adding hubs with more lug nuts to the equation-even if they are rated higher than the axle. Moving to 8-lug hubs sounds like you want to move from 5,200-lb axles up to 7000-lb axles. If this is the case, then we have a few options for you listed below; I've also linked below all of the 7000-lb axles we currently have available. Best Upgrade: Timbren Axle-Less...
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  • How To Upgrade a Dexter D60 Axle To Use 8 on 6-1/2 Inch Hubs
    In order to upgrade to the 8 on 6-1/2" lug pattern on your Dexter D60 Axle you will need to use the Dexter Trailer Hub and Drum Assembly part # 8-219-4UC3-EZ or the Dexter Trailer Hub and Drum Assembly part # 42866UC3-EZ. The former uses a 2.125" grease seal whereas the latter uses a 2.25" grease seal. If you send me the serial number on your axle I can confirm this for you or you can order Dexter Trailer Hub and Drum Assembly part # 8-219-4UC3-EZ and then buy the Grease Seals 10-36 part...
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  • Looking for Replacement Hub/Drums Brake Assemblies for Triple L Deck Trailer
    Hey Daniel, thanks for all of the info you listed on your trailer axle. Based on seeing all of that the correct parts are what you mentioned. The brake assembly set part # 23-464-465 is correct as well as the hub/drum part # 42866UC3-EZ. Did you have your brakes/hub fail or you just doing some preventative maintenance?
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  • Hub/Drum Recommendations for the Timbren Axle-Less Trailer Suspension # TASR7KS02
    For the recommended hubs/drums that work with the Timbren Axle-Less Trailer Suspension # TASR7KS02, we suggest the Dexter Trailer Hub and Drum Assembly - 7K lb E-Z Lube Axle - 12" - 8 on 6-1/2 # 42866UC3-EZ. With these hubs, they not only maximize the total weight capacity of your Timbrens, they are also perfect for the E-Z lube spindles. This complete kit comes with races, bearings, and grease seals.
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  • Looking For Dexter Axle, Brakes, Hubs And Leaf Springs For RV
    Hello Brent, thanks for reaching out. We do have the hubs and brakes for Dexter 7K axles, but I am sorry to say we do not offer an axle that matches your specifications. We currently offer only two sizes of 7K axle, a 94" or 95" hub face. We can provide brakes, hubs and a suitable replacement for the leaf spring. Take a look at the following: - Dexter Nev-R-Adjust Electric Trailer Brakes - 12" - Left/Right Hand Assemblies - 7K # 23-464-465 - Dexter Trailer Hub and Drum Assembly - 7K...
    view full answer...
  • Parts Needed To Add Electric Drum Brakes To A Trailer
    Hi Jamie, You would need to find a hub and drum with matching bearings and grease seals to fit the spindle on the trailer axle and a the correct capacity brake assemblies compared to the capacity of the axle. The more wheel studs there ae the higher capacity the hub is, but you'll want to stick with the same bolt pattern you currently have unless you're wanting to replace the wheels as well. We have two options to choose from depending on the inner diameter of your grease seal. If you...
    view full answer...
  • Replacement Components For Dexter Axle S/N 131049141
    Hey Christopher, Thanks for the axle tag info, it makes looking up the replacement parts so much easier. Your axles use the following components: Bearings # 14125A and # 25580 Grease Seal # RG06-070 Hubs/Drums # # 42866UC3-EZ Brake Assemblies # 23-180-181 If you need anything else just let me know and I'd be happy to help.
    view full answer...
  • Replacement 1/2" Trailer Hub Wheel Stud
    Hey Mark. I don't have a database that shows me what parts came on your 2016 Keystone High Country. The Provider ST235/80R16 Radial Tire w 16" Viking Aluminum Wheel - 8 on 6-1/2 - LR G - Black item # A16RG8BMMFL80 is the closest option I have to what you described and what's on the brochure for your 5th wheel. If your Keystone Montana has hubs like the Dexter item # 42866UC3-EZ you can replace the studs with item # RG03-040. Do you have a part number or manufacturer off one of your hubs?
    view full answer...


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