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 : mag452431 Description : Conv DF 01-03 BMW 5 Rear Series : California Catalytic Converter Body Material : Stainless Main Piping Diameter : 2 Material : Stainless Anticipated Ship Out Time : Approximately 1-2 Days CARB Compliant : Y Catalytic Converter Air Tube Adapter : Not Air Tube Kit Adaptable Catalytic Converter Length : 8.95 Catalytic Converter Overall Length : 8.95 Catalytic Converter Configuration : Direct-Fit Exhaust Component Mount Type : Uses Factory Hangers Exhaust Inlet Connection Type : Bolt-On Catalytic Converter Format : Pre-Catalytic Converter and Main Catalytic Converter Catalytic Converter Oxygen Sensor Location : Post Converter Catalytic Converter Outlet Diameter : 2 Catalytic Converter Width : 4 Catalytic Converter Substrate Material : Ceramic Catalytic Converter Inlet Diameter : 2 Recommended Use : Converter Warranty : 5 year/50K miles External/Internal Exhaust Outlet Connection Type : Bolt-On Exhaust Pipe Material : Stainless Steel Components : Bolt=2;Gasket=2;Nut=2;Washer=4 CARB Compliant : Yes Body Length (in.) : 8.95 CAT Converter Air Tube Adapter : Not Air Tube Kit Adaptable CAT Converter Configuration : Direct-Fit Converter Body Size : OEM Core Substrate Material : Ceramic Emission : California Inlet Size (in.) : 2 Main Piping Diameter (in.) : Stainless Steel Material : Stainless Steel Outlet Size (in.) : 2 Overall Length (in.) : 21.5 Oxygen Sensor Location : Post Converter Body Width (in.) : 4 Inlet Connection Type : Bolt-On Inlet Inside Diameter (in.) : 2 Outlet Connection Type : Bolt-On Outlet Outside Diameter (in.) : 2 Inlet Diameter : 2 Outlet Diameter : 2.0 in. 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 : 8.950 in. Outlet Outside Diameter : 2 Catalytic Converter Overall Length : 21.5 Components : Bolt=2 Inlet Inside Diameter : 2.000 in. 2001-2003 BMW 525i Base L6.2494cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2001-2003 BMW 530i Base L6.2979cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit