30cc Accelerator Pump Housing Kit With Diaphram, Spring & Screws Fits: Holley Carburetor 2300, 4150, 4160 & 4500 30cc Accelerator Pump Housing Cover, Diaphram, Spring & Screws Kit - Fits: Holley Specs: *Sold As A Kit (x1) 30cc Accelerator Pump Cover, (x1) 30cc Accelerator Pump Diaphram, (x1) 30cc Pump Spring & (x4) Mounting Screws *Diaphram is Made From High Quality Buna Rubber to Use with Gasoline or Gas Racing Fuels *Fits 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 *Part Number: 26-139 *These are Genuine Holley Performance parts *These Parts Will Come In Bulk Style Bag Packaging