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. One Kit replaces 3 Components (diaphragm, spring, o-ring) per 2 carburetors in Honda OEM Number 16048-MR1-305. Two different size springs per carburetor are supplied. Please match the appropriate spring size to your application. You will receive enough to do 2 carburetors.
Replaces Honda OEM Numbers:
Replaces K&L Number: 18-2824