Gasket Between Cat and exhuast piping
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From: Houston, TX
Gasket Between Cat and exhuast piping
Does anyone know what the part number for the gasket between the cat and the exhaust piping is (behind the cat)? When I came to the dealer to buy the part, they gave me a donut gasket, I was looking for the flat triangular gasket. I told the parts guy to look it up again, and the only thing that showed up on the computer was that donut gasket. 
Thanks.
-Johnny
Thanks.-Johnny
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From: Davie, FL
Yes, the stock exhaust gasket between the cat and intermediate pipe is a round donut-like shape. FWIW, this is the same part in some Acura Legends (#18302-SP0-003). When I installed my aftermarket exhaust, the local Honda dealers did not have the S2000 specific part, so I used the Acura one. I fit perfectly and is still working fine after 20k + miles.
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What you are looking for is a Aftermarket exhaust to OEM cat gasket. When I was looking for a new one, I contacted a few sponsors to see if they sold them. They refered me to the manufacture.
On the OEM Part, number 11 looks more like a metal ring than a gasket. Here is on in the flesh. Part number 8 looks like a donut.
On the OEM Part, number 11 looks more like a metal ring than a gasket. Here is on in the flesh. Part number 8 looks like a donut.
Thread Starter
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From: Houston, TX
Yea, that's what the parts guy gave to me. Where can I find the aftermarket exhaust to OEM cat gasket? Sorry if I wasn't clear about using an aftermarket exhaust to stock cat. I really appreciate the help!
-Johnny
-Johnny
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From: Longmont, CO
I don't understand why you'd need a triangular gasket - the OEM cat is designed to use a circular one. It's a circular pipe, after all. Using something triangular when the piping is circular would hinder the flow some, I imagine. What exhaust do you have? If it requires a triangular gasket, you'll have to get it from them. Honda doesn't make anything triangular.
Joined: Dec 2001
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He is trying to reinstall an aftermarket exhaust. All of the aftermartket exhausts I have seen, don't use the OEM style gasket. They use triangular gasket. The gasket he needs sits between the cat and the aftermarket exhaust. The OEM Cat has a flat flange and the OEM gasket fits into the OEM exhaust.