So yesterday I was driving my Z and a super loud ding noise came from under the car. I expected nothing from it figured a rock hit it or something. But then, after a while the exhaust let off a very odd odor and so I jacked it up, and looked where the exhaust connects to the cat converter where the gasket is, and sure enough one of the bolts fell out. I'm guessing when I got the nismo exhaust installed on there the bolts just weren't tightened enough. Anyone know where I can get these bolts? I've called my local auto part stores and none of them say they have it. I'm pretty scared to drive it because I'm worried it's just gonna fall apart. Thanks for your time

 

Just get a bolt/nut from home depot.

 

What size bolt would I need?

 

M10x1.25x25 (maybe 30 or other, get under and measure).

And don't just buy bolts from Home Despot. You need at least Grade 5 bolts or figure on replacing them again in the future. The heat, combined with the torque on the pipes will loosen or snap them in due time. That said, I recommend just getting them from Nissan.

 

you can get almost any grade of bolts you want from Lowes, i assume Home Depot or any hardware store is the same. some bolts i would get from Nissan (simply because youre not going to find them in stock at any hardware store...) but something like an exhaust bolt i would just pick a few that are an acceptable grade and be done with it. might be cheaper as well since Nissan probably marks them up a bit.