Seller notes

K&S Air Cut-Off Valve Set #56-1033 for Yamaha WR250F/WR450F/WR426F/WR400F Product Details Located on the side of the carburetor the air cut off valve prevents lean fuel mixture (backfire) when deceleratingDirect OE style replacement carburetor air cut off valve set. Includes; diaphragm, spring and O-ringTemporarily closes the pilot jet airway to provide a richer mix as the throttle closesIncludes cover Fit GuideModelAir Cut-Off Valve SetColorBlack/SilverOEM Reference5GS-149400000QuantityEach Pro...

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