A vacuum reserve canister captures an extra shot of vacuum from your engine for your power brakes. The COMP Cams Vacuum Canisters are for cars equipped with Big cams and power brakes. Canisters double vacuum volume for power brakes. Recommended for vehicles with 14" of vacuum or less. Electric vacuum pump ensures between 18" and 22" of vacuum. Complete vacuum pump kit included wiring, hoses and brackets.
