Honda's early twins use a twist-on gas cap that screws straight onto the filler neck — no hinge, no tether. That makes it the kind of part that gets set down on the workbench and lost, or left to pit and dull after decades of weather. This is a chromed, OEM-style replacement that threads right back onto the stock neck.
Because the screw-on cap isn't connected to the bike, it's easy to drop, misplace, or damage — and a missing or dented cap leaves your tank open to dirt and moisture. This chromed, OEM-style twist-on cap is a direct replacement for the CB175, CL175 Scrambler, SL175, CB350, CL350 Scrambler, CB450, and CL450 Scrambler twins that came with the screw-on cap.
Note: This is the twist-on (screw-on) cap. It is not the later hinged flip-top cap, and the two aren't interchangeable. If your tank has a hinged cap held by a latch, you need our Honda Flip Top-Style Gas Cap instead.
Difficulty: Beginner
The twist-on cap screws onto the filler neck and lifts straight off. The flip-top cap is hinged and stays attached to the tank with a latch. Honda used the twist-on cap on the CB175 and CL175 across their full run, and on the CB350, CL350, CB450, and CL450 through K2. The K3 and later 350s and 450s — along with the CB360, CJ360, CB500, CB550, and CB750 — came with the flip-top cap.
No — the twist-on (screw-on) cap and the hinged flip-top cap aren't interchangeable. If your tank has a flip-top cap, use our flip-top gas cap instead.
It ships complete and ready to install — no separate seal or gasket needed.
No. The CB360, CL360, and CJ360 came with the flip-top cap, not the twist-on. You'll want our flip-top gas cap for those models.
Last updated: June 2026
