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Does the 2K etrailer Axle Kit Need a Washer Between the Outer Bearing and Axle Nut?  

Updated 10/27/2025 | Published 03/23/2025

Question:

Should there be a washer between the outer bearing and axle nut? My e37YR axle/hub did not come with them. Thank you

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Expert Reply:

Hey Dwayne, thanks for reaching out!

The Trailer Axle with Idler Hubs # e37YR will not need the washer because it is a 2K axle. If you had something like a 3.5K or up then it would need a washer, but the lightweight ones don't require them.

Are you installing the axle yourself?

expert reply by:
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Jon G
Jon G. profile picture

Jon G.

10/27/2025

Hey Dwayne, how did things go with your 2K trailer axle after leaving out the washer? Your update could make it easier for others working with the same setup.

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