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Note: etrailer and UWS lock cores and keys are not interchangable despite sharing key numbers.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello everybody, this is Jeff at etrailer.com. Today we're gonna take a look at the replacement number CH503 lock cylinder and the keys for your UWS tool boxes that have the square paddle handles. Now these parts here will replace a damaged lock cylinder on your UWS tool box. It uses the square paddle handles. Now this lock cylinder will not work with the draw slide, the dog boxes, the T-handles, or the push-button locks. It does include the lock cylinder and the two keys, and it uses the same number that's on the lock.
If you look on the keys themselves, you'll see there's a number on it, it says CH503. And then if you look at the lock cylinder, on that, it is stamped CH503. That tells you that these keys will work in this lock cylinder. Now, if you do need the key separately, if you already have this lock and missing the keys, you can buy just the keys. You just get the number off the key to match what the lock cylinder says.
But as you can see, this will fit right in there, lock and unlock, and then pull it right out. But that should do it for the review on the replacement number CH503 lock cylinder and the keys for your UWS tool boxes that have the square paddle handles.
Ratings & Reviews
Daniel
2/8/2025
Great, installed toolbox on tongue of trailer, matched key number from trailer door so one less key.
Jon G.
2/8/2025
Robert
6/16/2020
Great no problems
Miker
7/23/2020
Still working great after a year in harsh conditions. So well that I used them in two, additional Dee Zee boxes.
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Stanley
7/28/2021
After a year of constant use and exposure to the elements the locks are still working like new!!!!