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This high-quality tapered roller bearing lasts twice as long as other brands. Special alloy blend reduces vibration, extending bearing life. Replacement part uses industry-standard number.
Specs:
Bearings and races do a lot of work in a small space, so material quality matters. Timken uses a specialized alloy blend that helps reduce vibration and extend bearing life, with testing showing its bearings and races can last up to twice as long as competing products.It's a higher-end option, but the tradeoff is longer service life and less reason to revisit the same repair.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi there, I'm Michael with etrailer.com. Today we're gonna take a quick look at this Timken replacement trailer wheel bearing. This is a high quality 3984 tapered roller bearing that's gonna replace an inner bearing for the hubs that you see on the screen there. So if you have any of those this is gonna do a great job for you. This does use the industry standard number there. So you can see that 3984 is very clearly printed.
So if you are needing verification this is gonna work for you. If you see that same number on the bearings that you're or bearing that you're replacing, you can trust it's gonna be a very simple swap out for you. Another way to verify would be to match up with your races. So these, the races that are compatible are listed on the screen there. Those are not included and you can see those model numbers there.
And then another way to verify would be to measure your inner diameter here. That is a very precise measurement. So I'd recommend using some digital calipers that can go down to a thousandth of an inch. So you can see our diameter. we're sitting right at 2.625 inches.
So again, it's gonna be much easier if you can find that industry standard number on the bearing that you're replacing. But if not, we have a couple other options there. This is gonna be a very high quality bearing. This is a Timkin product. If you're not familiar, Timkin is one of the most well known and highly trusted brands in the industry because their products are engineered with higher quality controls which ensures tighter tolerances and run outs than other manufacturers.
And that's going to then provide less movement and vibration and noise in your setup and can help lead to longer bearing life if you have it properly installed. That higher quality is even evident in the way this comes individually packaged. It's got a oil coating on it to help resist rust, surface rust. So when you get it, it's gonna be very great condition, ready for you to pack or oil and put in place. So if you are looking for a high quality bearing this is gonna be the way to go. It's going to give you great performance and longevity. And that completes our look for today. Again, I'm Michael with etrailer.com. Thanks for watching.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Heather A.
5/26/2026
We understand your concern regarding the missing country code markings. These bearings were purchased as genuine Timken products directly through Timken in Ohio. We take product authenticity very seriously and have not identified anything indicating these are counterfeit.
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Kate F.
3/11/2026
Glad you found us, Al! We get all of our products directly from the manufacturers, so you can rest assured that when you order from us, you’re getting the real deal, no fakes here!