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This hub-and-drum assembly is made for 9K to 10K general-duty Dexter axles built before July 2009. It’s sturdy iron construction with a 12-1/4" diameter x 3-3/8" wide drum that provides a solid braking surface for electric or hydraulic systems. With its 8 on 6-1/2" bolt pattern and 5/8" wheel bolts, it’s designed for serious load capacity—5,000 lbs per hub—giving you reliable braking under heavy weight.
Keeping bearings running smooth is easy with this oil bath design. Instead of tearing down the hub to inspect grease, just look through the clear oil cap to confirm lubricant level. The kit includes the complete oil cap kit (RG04-270) with cap, O-ring, and plug, so you can keep the system sealed and clean while getting quick visual checks before any trip.
You get everything needed for installation right out of the box—inner bearing 387A (2.250" ID), outer bearing 25580 (1.750" ID), inner race 382A, outer race 25520, and unitized oil seal 10-51 (2.875" ID x 3.880" OD). With the bearings, races, oil seal, oil cap, wheel bolts, and lug nuts all included, you’ve got a matched system built to fit and perform together.
This Dexter hub and drum is built from durable iron for strength mile after mile. Designed for the demands of heavy trailers and frequent stops, it gives consistent braking performance and long-term reliability when properly maintained. It’s a dependable setup that handles the workload without fuss or constant upkeep.
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.
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).
Common configurations: 5 on 4.5" (most popular), 5 on 5", 5 on 4.75", 5 on 5.5"
Customer Satisfaction Score:
81% were satisfied with this product
19% of customers were not satisfied
Ratings & Reviews
It was easy finding the right hub for the trailer. Everything was correct and made the job easy to complete.
Need to ship in better packaging. Boxes came in with holes. Parts were missing.
Replacement parts were sent out but the job is now delayed waiting on the parts.
Hub was exactly as described. Perfect fit and replacement.
Great Price!!!!!
One hub arrived damaged, poor packaging. Also these are single units Not pairs. Be prepared to buy per wheel as needed.
Good price and free shipping. Thank You
The hub and bearings came quickly, fit perfectly, and have run as they should. I'm a happy customer.
Product was an exact replacement part and fit perfectly. Quality, service, and price were all excellent. Only took 3 businee days to receive my order. Had my 53 ft car hauler up and running just a few hours after parts arrived. Thank you etrailer
Im only giving a level of three star because I really only needed the spindle but it was not in stock, and the time to restock was far to long, so I paid much more and guess I have a spare hub now. Delivery was quick and the product is good. Thank You
The break parts are like original. When we got it back together we got our trailer DOT certified.Life can go on.
I received my parts on time and in good order. I ordered two left hand brake assemblies, and two right hand assemblies. Unfortunately, four right hand units were delivered. To the companies credit, they refunded me for two of the units. Also the knock off oil bath 12 inch Dexter brake drum hub assemblies, which were very good quality, did not have the oil drain hole drilled in the side of the hub like the originals. This made it slightly more difficult to fill them with oil and they also will be more difficult to drain them, add oil and refill. I will be tempted to purchase the original Dexters in the future.
everything fit great
Best choice I have ever made. My fifth wheeler tires never get higher than 90degrees F on the roads from the good old Texas. Equivalent to 3K miles round trip to my beautiful twin cities MN.
The prosses of ordering parts from etrailer was very Stright forward and prompt updates on my item were quite helpful.
Perfect fit. I bought these because I wanted to change my horse trailer from No. 2 wheel bearing grease to No. 00 semi fluid grease. It’s the best characteristics of both grease and oil hubs without the negatives if you ask me. Well I needed a vented hub so the oil bath hubs. A tube and a half later of Schaeffer’s 274 Moly EP synthetic NLGI#00 grease and all bearings packed, hubs half full of grease and everything torqued to spec and I was done. There really is no better place for trailer parts than etrailer. Best prices and fast shipping.
Great product I installed them and put 8000 miles on my trailer after. No problems as of yet really impressed with the overall quality. THANKS
Easy to install
Arrived quickly. Even though item was heavy it was packaged well with no damage. First time buying from this site and was very pleased.
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Jenny N.
4/28/2023
Like the leaves on the wind your review came in quietly however we want to hear from you about your experience.