Divided T4 Cast Stainless 4 cylinder merge collector
These beautiful investment cast stainless steel 4 cylinder merge collectors were designed to be a perfect fit with the twin scroll T4 EFR series of turbocharger hot sides but will also mate up with many other twin scroll T4 flanged turbine housings.

Cast from high quality 304 stainless steel, designed to be welded to 1.5" pipe.