GrimmSpeed Up Pipe to Turbo Gasket Subaru Impreza WRX STi GrimmSpeed OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed we have worked with endless amounts of aftermarketgaskets, none seem to work as well as the multi-layer steel oem stylegaskets. The issue with the oem gaskets from Subaru is that they are soexpense. Well Grimmspeed has your answer, a premium multi-layer steelw/ stainless steel fire-ring gasket at a great price. This product cross-references with Subaru part number is 144022AA150. Applications: ALL '93-'08 Subaru turbo applications.