A vacuum reserve canister captures vacuum from your engine and stores it for your power brakes. This unit approximately doubles the volume of vacuum
available for your power brakes. It is recommended for cars with 14
inches of vacuum or less. Comp Cams Vacuum Canisters are made
from spun aluminum, which eliminates the hazard of flaking rust particles
contaminating the brake system and provides a 50% weight savings
over the heavy steel cans of the past.Features:Canisters double vacuum volume for power brakesRecommended for vehicles with 14" of vacuum or lessPump only operates when vacuum drops below 18"