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Replacement Bearing Kit for 5,100 lb Axles on a 2024 Puma Travel Trailer  

Updated 03/21/2025 | Published 03/13/2025

Question:

I have a 2024 Puma Travel Trailer. The axles are Lippert 5100 pound axles, with the part number 10F21117A. What would be the correct bearing kit for these axles?

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Expert Reply:

Hey Don, thanks for reaching out!

You either need the Bearing Kit # BK3-310 (2.125" grease seal ID) or the Bearing Kit # BK3-300 (2.25" grease seal ID). The part number on your axles unfortunately doesn't give me the info I need to reach out to Lippert to see what exact grease seal is needed, but you can either find the serial number and let me know, or measure your spindle where the grease seal sits and choose the bearing kit with the seal that matches what you have.

Is there anything else you're needing to get maintenance-wise, or are you just getting an extra kit to have on hand just in case?

expert reply by:
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Jon G
Don L. profile picture

Don L.

3/20/2025

The Serial Number for one axle is SO11716794 and the other is SO11716797. I have found it easier to just pack a new bearing than cleaning and packing an old one when doing bearing repacks. The price is reasonable enough to just us new bearings.

Jon G. profile picture

Jon G.

3/21/2025

@DonL Thanks for the feedback! I was able to cross-reference this with my contact at Lippert and I can confirm that the kit # BK3-300 is what you need.

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