K & S Carburetor Air Cut-Off Valve Sets
- Located on the side of the carburetor, the air cut-off valve prevents lean fuel mixture (backfire) when decelerating.
- Direct OEM-style replacement air cut-off valve set.
- Kit includes diaphragm, spring and o-ring.
- Temporarily closes the pilot jet airway to provide a richer mix as the throttle closes.
- Sold in sets for one carburetor.