Hi folks. My D2 runs loud and i found this (attached pic). Can you please let me know what type of gasket fits here? ( Im assuming tightening / resealing this will address the loudness)

thanks in advance !

 

The two mating faces don't meet flush. The gap is normal. Easy test: With the truck cold, stick a shop vac hose in the tailpipe, tape up any gaps so it's relatively air-tight. Turn the vac on blower mode to blow air through the system. Grab a spray bottle with soapy water and spray all the exhaust joints. Any leak will be *very* obvious. I found a broken weld causing an exhaust leak this way right there on that muffler in your picture (top photo, the muffler's on the right, the weld where the pipe goes in). Hope that helps!

 

There is no gasket from factory for this connection. You can take it apart, clean and smooth it out if necessary. I had a bump on the mating surface that prevented the connection from sealing.

 

Well i think so it's normal. The gap is absolutely normal. Still if you have some problem you can open and clean it will run perfectly fine