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K&L Air Cut-Off Valves are an inexpensive alternative to the OE assembly. They prevent afterburn generated by a lean fuel mixture when throttle is closed. Cut-off valve temporarily closes the slow-jet
K&S Carburetor Air Cut-Off Valve Sets feature OEM styling to provide a quality and affordable replacement over OEM. The Air Cut Off Valve prevents lean fuel mixture (backfire) when decelerating and pr