Replacement Mounting Hardware Kit for a Sears X-Cargo Roof Box

Updated 08/15/2025 | Published 07/30/2025

Products Featured in This Question

Replacement Hardware Kit for Searsbox Cargo Box

(233)

$83.33

Question:

Looking for u bolts for sears x cargo carrier that would work on factory cross rails on 2025 Mazda cx-50

asked by: Rich

Expert Reply:

Hey Rich, thanks for reaching out!

Thule (who helped make the Sears boxes) told us that the Replacement Hardware Kit # SR05587 is what fits the X-Cargo boxes, but we've had some customers successfully use the Kit # TH05603 as well.

If your cargo box is needing some TLC then the first kit is what you'll want to get, but if you just need the mounting hardware then you'll want to stick with the second kit.

This mounting hardware will fit your box, and will also fit the crossbars on your 2025 Mazda CX-50, but you'll want to make sure the mounting hardware can be spaced out enough to fit your crossbar spacing. You can do this by tossing the box on top of your vehicle and seeing if the holes for the mounting hardware matches your crossbar spacing - you may need to drill new holes in the box to ensure fitment.

Let me know what you think!

expert reply by: Jon G

Jon G.

8/15/2025

Hey Rich, did you get a chance to try out either of the hardware kits for your X-Cargo box on your Mazda CX-50? I'm curious to know if the fitment worked out for you, as it could really help others in a similar situation.