Broken gas cap latch? Can't keep your fuel cap closed while riding? This replacement latch fits the flip-top style gas cap used on most vintage Honda twins and inline fours from the late 1960s through the mid-1970s.
The flip-top gas cap latch takes a beating — decades of opening and closing eventually wears out the spring, bends the catch, or snaps the hinge entirely. A broken latch means your gas cap flops open while riding, spilling fuel onto your tank and down your leg. Not a great look, and a fire hazard to boot.
Our replacement latch installs with a hinge shaft and circlip — much easier to service in the future than the original factory rivet. One latch per gas cap.
Does NOT fit: Honda CB175, CL175, SL175, CB350 K0–K2, CL350 K0–K2, CB450 K0–K2, or CL450 K0–K2 — those earlier models use a twist-on style gas cap with no latch. Also does not fit the CT90 or any model with a hinged (non-flip-top) cap.
Difficulty: Beginner
Stuck pin tip: If the original rivet won't budge, try penetrating oil and let it soak before tapping. Don't use a nail as a punch — use a proper pin punch to avoid bending or breaking your tool.
No. The CB350 K0, K1, and K2 (and CL350 K0–K2) use a twist-on style gas cap — there's no latch on those models. The flip-top cap with latch started on the CB350 K3 (1971).
This is a standard thumb-release latch. We also sell a locking version that uses a key — handy if you park your bike in public and want to prevent fuel theft or tampering.
The factory rivet can be stubborn after 50 years. Use penetrating oil, let it soak, and drive it out with a proper pin punch — not a nail. If it still won't move, a small drill bit can help loosen the rivet before punching.
Yes — it fits the CB750 K0 through K6 (1969–1976). All of those models use the same flip-top gas cap design.
Last updated: June 2026
