Vacuum Reserve Canister, Steel, Chrome-Plated Finish, Check Valve, Hardware, Each

Big End Vacuum Reserve Canister stores extra vacuum from your engine when a big camshafts are used in a high-performance street /strip application when using factory power brakes. This unit stores twice the volume of vacuum than the high-performance engine can supply. Recommended for cars that 14 Hg./in. of vacuum for proper power brake use.