PC Racing Carburetor Vent System - CVS 2 - Black PC23 Stop sputtering and bogging through whoops, jumps and stream crossings Ensures constant fuel flow by directing standard carburetor vent hoses upward to eliminate vapor lock Hook-and-loop fastener mounted vent box prevents clogged vent lines and keeps dust, dirt and water out of carbs CVS 2 is for single carbs; CVS 3 is for dual-carbs Includes 4 of loose vent hose, four T-fittings and foam filter equipped vent box