Replacement Thule Lock Cylinders for a Older Thule Cargo Box

Updated 04/29/2025 | Published 04/27/2025

Question:

I have an older Thule box with locks that have no numbers on them. At least not that I can see anymore. I’m missing the key. They are unlocked but I would like to either replace the cylinders or find the correct key. Any help would be appreciated. Picture below.

asked by: Brian G

Expert Reply:

Thanks for the picture Brian. Since you have a Thule box and it is unlocked you can replace your blank lock cores with the Thule One-Key System Lock Cylinders item # TH450200.

To replace an existing lock core, you'll need to use the included master key to remove it. Once the existing core has been removed, pop in the new One-Key System lock.

If you have any additional questions feel free to throw them in the comment box below.

expert reply by: Jerred H