BEFORE YOU ORDER — MEASURE YOUR JET FIRST
Remove the jet from your carb and physically measure it. If it does not dimensionally match this listing, this is not the correct jet — do not buy it.
Buyer is solely responsible for confirming the correct jet size before purchasing. Do not rely on year/make/model fitment guides — they cannot be guaranteed 100% accurate.
All jet sales are final. No returns or exchanges — no exceptions.
Genuine Keihin N424-204 pilot jet (also OEM 99124-300). This 28mm long pilot jet is used in the 1969-1976 era Honda CB750 K, F and A carburetors and other vintage Keihin carburetors with the long-thread N424 style.