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 : mag551666 Description : Conv DF 2007-2009 Mercedes-Benz E350 3.5L California Air Board Approved : Yes Catalytic Converter Format : Pre-Catalytic Converter and Main Catalytic Converter Core Substrate Material : Ceramic Exhaust Component Mount Type : Uses Factory Hangers Exhaust Pipe Material : Stainless Steel Material : Stainless Recommended Use : Converter Series : California Title : DF Converter Universal Or Specific Fit : Specific WARNING CA Proposition 65 : No Anticipated Ship Out Time : Approximately 1-2 Days California Proposition 65 : WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov Catalytic Converter Body Material : Stainless 634 : Ceramic 2007-2009 Mercedes-Benz E350 Base V6.3498cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit