Brand new catalitic converter still in shipping box. The converter is factory welded to a 2" diameter exhaust pipe with a triangular flange (three hole mounting pattern) welded to each end of the pipe. Near one end of the pipe their is a 4" long bulge made with braided steel wire close to the flange. I am not sure if this is a resonator or has something to do with stress relief on the flange joint. At the opposite end of the pipe is a drilled and tapped mount for an oxygen sensor. Overall length is approximatly 3 feet from flange to flange. Gas DOHC rated. Call (705) 946-4991.