Mr. Gasket 1511G - Mr. Gasket Power Valve Protector

If you use a Holley carburetor then you know how easy and frustrating it is to blow a power valve. But with this kit, that is a thing of the past. This one-way check valve prevents engine backfire from rupturing the power valve diaphragm. Fits Holley 4150, 4160 and 2300 model carburetors.