Brand New 2Fastmoto Honda Carburetor Air Cut-Off Valve Kit. The air cut-off valve helps to eliminate backfiring on hard deceleration (throttle fully closed) in constant velocity carburetors. Hard deceleration creates a high vacuum signal in the intake tract which activates the valve.
Kit replaces 3 Components (diaphragm, spring, o-ring) in Honda OEM Numbers:
Replaces K&L Number: 18-2834