Collection: Truck Cap, Topper & Tonneau Keys

Truck caps, toppers, camper shells and tonneau covers use a handful of lock makers, and almost all of them stamp a key code on the lock face or the key. With the code, we cut new keys without the original.

This hub groups the series we carry for these locks: TriMark TM15 series used on caps and toppers (TM700–TM729 and others), Bauer BAU3 series used on caps, camper shells and toolboxes, Roll-N-Lock tonneau covers (RL series), Better Built and Eberhard series, plus the 1660 series used on some topper and cap doors.

Where to look for the code: on the face of the T-handle or paddle lock, often on a small ring around the keyway, or on the back of the cap handle. Clean the area first; dirt and paint hide stamped letters. Some codes start with letters (RL, TM, CH), so include every character exactly as it appears.

Your rear window lock and side windows may use different codes, so check each lock. Read how to find your key code and Will this key fit?. Related hubs: TriMark keys, truck toolbox brand keys and RV and camper keys.

How to order: open the listing whose code range includes your code, type the code in the Key code box, type it again to confirm, and add to cart. The box only accepts codes in that series, so you can't pick the wrong one by accident. Orders before 2 PM ET ship same day.

Locksmith since 1989. Keys that fit your life.