Holley Power Valve Check Ball Kit RG400032XL it provides the hot spark

it provides the hot spark needed for maximum horsepower

550 Long Silver

The Super 50 series muffler is a larger version of Flowmaster's 50 series Delta Flow muffler

Made with fire retardant Nomex and Kevlar

Holley Power Valve Check Ball Kit RG400032XL it provides the hot sparkPower valve "blowout" protection can now be added to older model 2300, 4150 and 4160 carburetors. Consisting of a spring, brass seat and check ball, this kit will effectively protect the power valve and is easy to install. Included is the proper drill bit size, with stop, to facilitate installation. Detailed instructions are included. Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup