Replacement Bearings For A 2020 Grand Design Solitude 373FB

Updated 12/22/2025 | Published 10/08/2024

Products Featured in This Question

Timken Replacement Trailer Wheel Bearing - 25580

(156)

$24.52

4" Carbon Fiber Digital Caliper

(26)

$11.93

Question:

I have a 2020 Grand design Solitude 373FB with 16 “ tires. Do you know which Timkin inner and outer wheel bearings I would need to replace mine? Also I’m looking for a replacement rod and handle for the fresh water release on the underbelly.

asked by: Richard J

Expert Reply:

Hi Richard,

There unfortunately isn't a guide accessible to us to look up your bearings so you would need to either remove the hub and check the bearings to see if the part numbers on them are still legible or you can measure the spindle with a caliper # PTW80157 at points B, C, and D from the diagram below as well as the bore hole for the hub. With these measurements we can determine the bearing sizes/part numbers.

If your axle tag is still good and we can get a picture of it I could also try contacting the manufacturer for a build sheet for the axle and can see what bearings were used.

expert reply by: Kevin C

Spindle Diagram
(click to enlarge)

Robin H.

12/22/2025

Hey Richard, did you get a chance to measure your spindle or check the bearing numbers on your Solitude’s hubs? Once you had those details, were you able to match the right Timken bearings? Knowing what worked could help others replacing theirs too.