TC-Choppers Throttle slide vacuum valve rubber Fits:> CV Carburetors

The most delicate part in a CV carburetor is the vacuum valve. Your carburetor will hardly work when this rubber membrane is punctured or torn. Harley-Davidson only sells the vacuum valve installed on the throttle slide (OEM 27585-88), but Zodiac has just the rubber available for a much more economical price. Fits all stock Keihin CV carburetors as found on all 1988 thru 2006 Sportsters, 1990 thru 1999 Big Twins and 1999 thru 2006 Twin Cam models.
 
Article numbers:
747569: Throttle slide membrane rubber, improved for use with E10-fuel