3" exhaust gasket SOLD SOLD SOLD SOLD FREE GASKET! I ordered the wrong exhaust gasket for my R53, but Amazon didn't want to pay my return shipping and said don't worry about it, so now I have a spare gasket that I'm never going to use. It's a Vibrant 3" 2-bolt gasket, part number 1458. Stock exhaust diameter is 2.25", and my Milltek is 2.5" dia, so this won't fit most exhaust systems. Gasket is FREE, I'll pay shipping via USPS if it's less than a few dollars. Send me a PM, first come first served.