was wonderin what gasket i need to go from header to cat. i know ist round tapered at one end and all but no one carries or seems to have an idea of how to get a hold of one (2.25header outlet to 2.5 cat inlet) any tips??

 

hey i found out a generic doughnut gasket would work but if anyone has ideas i would appreciate the input

 

you are going to have to size it based of the header and hope the cat gets a good enough seal. The 2.25 inch on the header is the stock size correct? you can order that doughnut from honda or rockauto.com.

 

2.25 is the aftermarket header outlet size the 2.5 is the cat and cat back size not sure what the stock is? havent disassembled yet and the cat is a tapered inlet so the tighter the bolts the more it seats thanks for the input bnuk
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99 integra ls

 

Just go to Napa or autozone or something. They'll have it.

 

ty will do
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99 ls