Pay in 4 interest-free payments of $37.50 Learn more
Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
air filter: 4-inch conical
build-up• Faster recovery from heat
higher-frequency tone than standard
Increases track width for improved stability and handling
Multi-layer steel
Forge Blow off valve kit Audi S4 / S5 B9 interieur air filter: 4-inch conicalThe Forge Blow Off Valve Kit is a direct upgrade for the Audi S4 and S5 B9. This kit is designed to outperform the OEM valve, offering better response, handling higher pressure and producing the desired blow off sound. Manufactured in the United Kingdom, this valve has a polished finish and is easy to fit. Features Direct bolt on Distinctive woosh sound Internal piston for faster response and durability Polished finish All hardware included
