Stainless Works BBC Round Port 304SS Exhaust Flanges 2-3/8in Primaries (Raised Port Heads Only) - HFBBCH238RSD fits_1999-2005`Audi`Allroad For Independent Rear Suspension (IRS)

For Independent Rear Suspension (IRS) only

1 change in air/fuel ratio and provide enough time to shut down an engine before damage occurs

Connects to OEM downpipes

17430-7A14083

335is 2013-2011

Stainless Works BBC Round Port 304SS Exhaust Flanges 2-3/8in Primaries (Raised Port Heads Only) - HFBBCH238RSD fits_1999-2005`Audi`Allroad For Independent Rear Suspension (IRS)Big Block Chevy round port header exhaust flanges. These flanges come as a pair and are designed for 2 3 8" primaries, also these are used only for raised port BBC heads, laser cut from heavy duty 3 8" thick 304 stainless steel for superior resistance to warping from high heat, and comes with a limited lifetime warranty.