Hello, I have aftermarket mufflers. I was trying to put stock mufflers back on. I ran into a problem with the muffler gaskets. Too small ID for my header output. The new mufflers are KHI K 501, the header is KHI m 117. I picked up the mufflers used with gaskets. Do you guys know what part number muffler gaskets I should use or the measurements of Part #11060-1376 . Any help would be greatly appreciated.

* Last updated by: Hopper on 6/19/2018 @ 9:47 PM *

Start with first year 2006 gasket number. I think 2008 changes gaskets. So first year is small diameter, then the other gasket number is the larger opening. Said another way: look inside the header. No honeycomb in the center of header, use first year gasket. Honeycomb noticed in header, use later part number change--to compensate for the air to exit as if no honeycomb present. Make sense?

These might help. This has come up so many times there could be a sticky.

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Thank you Rook and Hub I just checked the links provided. I stopped by the dealer today. I ordered the original gaskets for my 2010. The KHI K 501 mufflers are supposed to have come off a 2007.

Correct, and here's why. The mufflers [chrome and/or black] all have the same OD. Only 2006/2007 use the [cat-less] thicker gasket. The thinner gasket begins for 2008 [cat-intro] on up.

Onlyour honeycomb knows for sure.