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. :confused: Thanks.

-Johnny

http://www.hondaautomotiveparts.com/...3S2A01_B02.gif

Number 11 right? I think it's: 105848

On the stock exhaust it is the donut type gasket.

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.

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.

https://www.s2ki.com/forums/index.ph...mage&img=57885

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

What kind of exhaust? It should manitain the stock O-ring stlye gasket.

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.

[QUOTE]Originally posted by Kaolinte
[B]What kind of exhaust?

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.