Question about Cat Back Donut Gasket

RichB

Member
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2007 Cosmic Blue Mazdaspeed 3 GT
If we upgrade to a 3" Exhaust, do we need to replace the donut gasket between the mid pipe and the rest of the exhaust?

If so where is a good place to get one. Thanks
 
The reason I ask is because my Donut Gasket is leaking with my Corksport Exhaust. I am wondering if a new OEM one would fix the leak. Does anyone know if it is possible to get a bigger one?
 
i know people were saying that we share a gasket similar to one from a late model caddy. you should bring it in to autozone and have them check out there inventory.
 
brought my car to an exhaust shop and found out that it wasn't the donut gasket. It is actually the first resonator on my Corksport CBE that is the problem.
 
either leaking or a weld inside of it came loose. Lets see if Corksport can help me.
 

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