1801411162 Insulating Flange
I haven't installed this item yet, but I did inspect it, and it looks fine. This is one of those items that even tallented McGiver types would have trouble duplicating. If yours leaks it will be noisy, and will contribute to explosions in your exhaust system on deceleration.
Reviewed by: Frank Jones from Clarkston, Wa. on 1/28/2015