Replacement Lock Assembly and U-Bolts for Sears X-Cargo X-Treme Roof Box
Updated 09/12/2025 | Published 08/30/2025
Question:
I have a sears xcargo Xtreme rooftop carrier. I need a replacement lock assembly and 4 ubolt. Can you recommend parts?
asked by: Jeremy W
Expert Reply:
Hi Jeremy; the lock assembly varies on some of the old X-Cargo boxes but if your design matches the # SR03807 you can use this as a replacement. The U-bolts on most can be replaced with the # TH02943 but I would also match up the dimensions to what you have now to make sure they're the same. I attached a picture with the dimensions below.
If you have different U-bolts other kits can be made to work but you will probably have to drill some holes. If you have a different lock assembly the same is true, you will have to modify the box to get a different lock style to fit unless you can find an original replacement floating around somewhere.
(click to enlarge)
Product Page this Question was Asked From
Replacement Lock Core and Key for SportRack Explorer Cargo Box - Qty 1
- Accessories and Parts
- Roof Box
- Lock Parts
- Thule
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Robin H.
9/12/2025
Hey Jeremy, did the lock assembly and U-bolts I suggested work out for your X-Cargo rooftop carrier? I'm asking because your experience could help others looking for similar replacements.