The TurboXS Subaru OEM Downpipe to 3" Catback Adapter is the perfect solution when trying to mate an OEM Downpipe to a 3" Catback Exhaust System. Made from 304 Stainless Steel for superior corrosion resistance, this complete kit includes both our Super Thick Multilayered Stainless Steel gasket and a new Donut Gasket.