PART NUMBER: 61-2144
Replacement factory Mazda "donut" style gasket for the junction between midpipe and muffler on the 2016+ MX5.
If you have a leak at this junction when you change to an aftermarket muffler, it is likely because this factory gasket has formed itself to the stock muffler's contour. Changing to a fresh gasket as sold here usually solves the leak.If you have over 20k miles on your ND, this is a good addition to your new muffler purchase.
Note this will not stop condensation weep at this joint. It's a moving joint, metal on one side, condensation passing through that sort of flex joint is going to happen and we see it on these cars brand new from the dealership. But if you feel 'puff puff puff' actual exhaust gases leaking then consider a replacement. Another trick is to increase spring tension with a few washers between nuts and the springs to 'push' the gasket a little harder into the mouth of the muffler side receiver.