After market worked for me:

Nice product

Hey, if yours was like mine and is disintegrating pretty bad, and you just want to replace it, I got this one one Amazon that I'm using. I know it's not what you asked for since it isn't the stock one, but I think it will work really well. It's a bit thicker than stock and I just used my old one as a template when cutting. It cut pretty easily with some serrated scissors I used. You just have to be careful not to rip it when installing like not trying to stretch it much once you put the clips back in.

uxcell 394mil 10.76sqft Car Fen-der Engine Heat Sound Deadener Dampening Insulation Mat 40 Inch x 40 Inch