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Replacement Bearing and Seal for 5,100 lb Trailer Axle  

Updated 12/29/2025 | Published 12/22/2025

Question:

Just thinking ahead about checking my bearings on my new RV. How do I know what size grease seal and bearings are on my axle. I have attached a photo from the axle. Thanks, Bill

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Axle Tag/Sticker
Axle Tag/Sticker
(click to enlarge)

Expert Reply:

Hey Bill, we have bearing kits for 5,200 lb axles like you have with the part # BK3-300 which comes with a new seal and the correct replacement bearings. If you wanted just the grease seal you'd want the part # GS-2250DL.

expert reply by:
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Jameson C
Bobby F. profile picture

Bobby F.

12/25/2025

I had purchased seals from Autozone or ORiellys and what I got was china junk. Ordered the seals for my axil rating and the were better made and aa bit less expensive. They were good quaality double lip and fit on issues

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Jameson C. profile picture
Etrailer Expert

Jameson C.

12/29/2025

@BobbyF Nice! Happy to hear they are working for you!
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