I have a leak between my O2 sensor pipe and my B-pipe. While looking for solutions I saw this: http://www.neverseezproducts.com/gasketseal.htm. Anyone have experience with this product or others? The thing is I replaced all my gaskets with Nissan OEM parts and still had the leak, so I think I need something other then new gaskets.

Please help I'm losing power and gas mileage!!!

Thanks,
Mark

 

Are you sure it is leaking at the flanges, and not through a broken weld or something?

I have used Orange/Red RTV to seal up some exhaust leaks, but it is a pretyy crappy way to address the issue.

 

I'm 100% positive that the leak is at the flanges, it's between the sensor pipe and b-pipe flange. The problem is that there is a small gap between the flanges that formed from the old b-pipe since i got a new system. The hole is too big for the gasket to cover, I'll try and get pictures to give a better idea.

Can you send me a link to RTV stuff, I really just need any solution for this problem, its really bothering me because I can feel the power loss.