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Replaces the oil cap, O-ring, and plug for your Dexter axle. Fits 9,000-lb axles manufactured from 10/89 to 7/09, 10,000-lb axles manufactured prior to 7/09, and 12,000-lb and 15,000-lb heavy-duty axles.
Features:
Specs:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Speaker 1: Today we're gonna take a look at the replacement oil cap kit for 9,000-lb to 15,000-lb Dexter axle. Now this cap is the Dexter 21-36 oil cap. It is designed to fit a 9,000-lb axle manufactured from October 89 to July of 2009. Fits the 10,000-lb axles manufactured prior to July of 2009. And also fits the 12,000-lb and 15,000-lb heavy duty axles. The cap itself is a clear, polycarbonate construction.
It includes everything shown here. The oil cap, the O-ring to seal it and then the rubber plug. A few specs on this, overall diameter edge to edge is gonna be right at 4.36". The threaded diameter, the part that threads into the hub, is gonna be 3.97".Inside diameter, is right at 3.59" and then the overall height from the bottom to the very top is right at 2" tall. But that should do it for the review on the replacement oil cap kit for 9,000-lb to 15,000-lb Dexter axles..
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Came fast. Came complete. Appear correct for application
PROMPT DELIVERY AND PERFECT FIT
Excellent Service
Prompt Shipping
Thanks .
Great prices, great product, fast shipp ing
My first experience with oil bath hubs, I was told to keep a couple of these on hand. These are a great value and fit perfect! I would like to be able to buy the O-Ring, but couldn't find it on the website.
I am refurbishing an older trailer, Parts were well represented and were delivered on time, as promised.
Grease cap works fine, quality seems good, price was fair.
Product fit perfect. Product has actual part number visible in photo. Comes with all parts needed for easy exchange. Super product.
Good product, I like to keep a couple of these on hand just in case. Occasionally mishaps occur, my fault. somebody else's fault, nobody's fault but sometimes these caps get broken (a rock?) or if not torqued well fall off and that can be bad news. The last ones I got have been on the axle for a few years and are holding up well. I bought two more just as backups because I know they'll stay on and won't leak.
I have ordered numerous items from these fine folks. Always arrived as advertised, good quality products and very customer oriented. Plus my shipping is always fast. I will shop here again and again
The oil bath cap that I received was a perfect fit. It screwed right on and fits tightly. I strongly advise those installing this type of cap to obtain the properly sized socket in which to tighten it, i e, a large set of vise grips or similar tool.
The CSR was very helpful, suggested the right shipping option. The part was delivered on time and exactly what I needed. I would order from e-trailer again, thanks.
One of the simplest, best looking improvements you can make to your trailer. Recieved mine in 4 days, standard shipping.
The new cap was a perfect match to the leaky one. Two very small ridges (mold marks) could be felt across the o-ring sealing surface, so a few light strokes with a 3-corner needle file smoothed them right up. I did this same thing on another axle two years ago and it’s still dry and clean.
Fit perfectly. On dexter 12,500 axle.

Shane H.
11/30/2021
Product has no issues. Perfectly made. I gave bought several items and I am happy with the service and customer service. These guys and gals are awesome. I will be buying more stuff. Gotta keep it on the DL from my wife. Haha
Product works great in our sawmill. Great company, fast shipping!
I have purchased from etrailer.com several times now, and I have been very satisfied with my purchases from the price, the prompt shipping etc. etrailer.come is my first choice and where I start my search for anything I need for my trailers.
Brian M
Exact replacement for Dexter 15,000 lb, oil bath axle plug. Part # matched on the rubber plug with the one that was torn, I needed to replace. 15,000 is not very common size, so it was hard to find locally, but etrailer had it!!
this is a great deal on trailer axle oil bath caps and it shipped to us quickly.great deal
Pretty good product.
I'd purchased 4 of these for my 4-car Wally-Mo car trailer and so far, they seem to have been doing the job. They haven't yellowed or cracked and I am sure I have over 120,000 miles on them for the year they've be on.
By the way, service from etrailer was good. Delivery was in a timely manner and followup to the purchase was surprisingly thorough.
Great product and fast service. I will be back I have other trailers and I have told several or maybe even many people about you. Thank you so much These were mostly bearings and seals for a heavy trailer so I don't have any pictures. Take my word for it though with them
Perfect is all I can say about this product. Exact match and extremely easy installation. Cannot say enough about the ease of ordering and fast delivery from etrailer. Will certainly be a returning customer.

Hlc
9/28/2015
Yes, these items are still performing as expected no issues what so ever.Thanks for checking in.
A little over a year and still working. Just make sure to use a torque wrench when installing them. I set my torque wrench to 20 lbs and then I gave a tiny snug. It probably ended at XX lbs.
Make sure to use the torque wrench. It is extremely easy to over-tight these caps and you wont notice it was over torqued after a few months later when they crack between the thread and the cap.

Jvl T.
10/6/2024
Working good one year later.
etrailer had all the axle info for the correct bearing, seals, and races but sent me huge oil caps that were no where near the correct size. I called to get replacements and am still waiting on a call back two business days later. Now my equipment trailer will be out of service for a week. I'm going to a local trailer dealer next time.
Good replacement cap for a great price
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Kevin
8/26/2022
still working great!