30cc Silver Accelerator Pump Housing Cover, Diaphram, Spring & Screws Fits: Holley Carburetor 2300, 4150, 4160 & 4500 30cc Silver Accelerator Pump Housing Cover, Diaphram, Spring & Screws Kit - Fits: Holley Carburetor Specs: *Sold As A Kit (x1) 30cc Silver Accelerator Pump Cover, (x1) 30cc Accelerator Pump Diaphram, (x1) 30cc Pump Spring & (x4) Mounting Screws *Diaphragm is Made From High Quality Buna Rubber to Use with Gasoline or Gas Racing Fuels Includes These Part Numbers: * 30cc Silver Accelerator Pump Cover Part Number 26-139S * 30cc Buna Rubber Diaphragm Part Number 135-5 * 30cc Accelerator Pump Return Spring Part Number 20-108 * 30cc Accelerator Pump Diaphragm Bolts Part Number 26-4 *Fits and Works with 2300, 4150, 4160 Series Holley Carburetors and More !! *Also Fits and Works with Similar Style AED, Quick Fuel, Barry Grant, Street Avenger & Demon Style Carbs *These Parts Will Come In Bulk Style Bag Packaging