Size: one side Inner diameter 3 inch to one side Outer diameter 4 inch(ID 3"to OD 4"). The exhaust adapter can be welded or clamp together. Pipe length 4.2 inch, pipe thickness 0.054", please allow tolerance 0.12"
One piece construction without welding, manufactured with precision bends and OE-style routings,heavy duty 16-Gauge stainless exhaust connector coupler for longer life
Made from T201 stainless steel. The surface of this exhaust adapter is polished, it is shiny and worthy. Please check the detailed size (ID 3 in to OD 4 in) to make sure it fits for your existing system before purchasing.