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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:
16048-MM5-671
16048-MN4-742
16048-MR7-004
Replaces K&L Number: 18-2834
