MagnaFlow Direct-Fit Catalytic converters are designed for easy bolt-on installation for the Professional Installer. Each is designed to exact the original equipment specifications. While the majority off the Direct-Fit Catalytic converter products do not require welding; cutting or bending; limited applications may require additional welding for optimal installation. PartNumber : mag441057 Description : Conv DF 04-07 Subaru WRX/STI 2.5L T Main Piping Diameter : 2.5 Material : Stainless Series : California Anticipated Ship Out Time : Approximately 1-2 Days CARB Compliant : Y Catalytic Converter Air Tube Adapter : Not Air Tube Kit Adaptable Catalytic Converter Format : Pre-Catalytic Converter and Main Catalytic Converter Catalytic Converter Oxygen Sensor Location : Pre Converter Catalytic Converter Body Material : Stainless Catalytic Converter Substrate Material : Ceramic Catalytic Converter Inlet Diameter : 2.5 Catalytic Converter Outlet Diameter : 2.5 Catalytic Converter Width : 6 Catalytic Converter Length : 8.5 Catalytic Converter Overall Length : 8.5 Catalytic Converter Configuration : Direct-Fit Exhaust Component Mount Type : Uses Factory Hangers Components : Bolt=1;Gasket=2;Washer=1 Warranty : 5 year/50,000 mile External/Internal Recommended Use : Converter Exhaust Pipe Material : Stainless Steel 2899 : Yes 634 : Ceramic 601 : 2.5 1172 : 2.5 616 : 6 615 : 8.5 3145 : Specific 353 : Yes Body Length (in.) : 8.5 California Air Board Approved : Yes CAT Converter Air Tube Adapter : Not Air Tube Kit Adaptable Converter Body Size : OEM Core Substrate Material : Ceramic Emission : California Inlet Size (in.) : 2.5 Main Piping Diameter (in.) : Stainless Steel Material : Stainless Steel Outlet Size (in.) : 2.5 Overall Length (in.) : 23.9 Oxygen Sensor Location : Pre Converter Universal Or Specific Fit : Specific Body Width (in.) : 6 Gasket Or Seal Included : Yes Inlet Inside Diameter (in.) : 2.5 Outlet Outside Diameter (in.) : 2.5 California Proposition 65 : No Title : DF Converter WARNING CA Proposition 65 : No California Proposition 65 : WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov Body Length : 8.500 in. Outlet Outside Diameter : 2.5 California Air Resources Board Approved : Yes Components : Bolt=1 Inlet Inside Diameter : 2.5 Body Width : 6 Substrate Material : Ceramic Body Length : 8.5 Catalytic Converter Overall Length : 23.9 Inlet Inside Diameter : 2.500 in. 2006 Subaru Impreza 2.5i H4.2458cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2005-2006 Subaru Impreza Outback Sport H4.2458cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2005 Subaru Impreza RS H4.2458cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2002-2003 Subaru Impreza WRX H4.1994cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2006 Subaru Impreza WRX H4.2458cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2006 Subaru Impreza WRX Limited H4.2458cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2005-2006 Subaru Impreza WRX STI H4.2458cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2006 Subaru Impreza WRX TR H4.2458cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit