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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:
Replaces K&L Number: 18-2834
Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects or other reproductive harm. (yes, this is a ridiculous message, but we are required to put it here)