Do I need the s2000 header doughnut gasket? Im doing Toda header, carsound cat, and 2.5" piping?

Anyone know the part#?

 

Please use the SEARCH function. It's there for a reason.

18229 PCX 003 S2K
18229 SPO J51 Legend

I would get one SMSP, its cheaper.

 

Thanks for the part #'s

I just wanted to know if I HAD to have it and if so, why?

I did a search on doughnut and didnt come back with too much info

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KRiS1 &raquo;</TD></TR><TR><TD CLASS="quote">
I just wanted to know if I HAD to have it and if so, why?
</TD></TR></TABLE>

I can only assume that it will leak exhaust gas without it, so yes, you need it..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KRiS1 &raquo;</TD></TR><TR><TD CLASS="quote">I just wanted to know if I HAD to have it and if so, why?</TD></TR></TABLE>

Yes, you need the larger donut gasket. The stock one is far too small, and the header won't come anywhere close to sealing against the cat. flange if the donut is missing.