Fits: 2002–2006 Cadillac Escalade 2003–2006 Cadillac Escalade ESV 2002–2006 Cadillac Escalade EXT 2003–2006 Chevrolet Silverado 1500 2006 Chevrolet Suburban 1500 2007 Chevrolet Silverado 1500 Classic 2001–2007 GMC Sierra 1500 2007 GMC Sierra 1500 Classic 2001–2006 GMC Yukon 2001–2006 GMC Yukon XL 1500 Magnaflow51878Catalytic Converter Direct FitMagnaFlow 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 of the Direct-Fit Catalytic Converter products do not require welding; cutting or bending; limited applications may require additional welding for optimal installation.MagnaFlow direct-fit catalytic converters are designed for easy bolt-on installation for the professional installer. Welding, cutting, and tube-bending equipment are not required. These cats feature a ribbed body that minimizes expansion and distortion when the converters heat up. The ribs form a channel that protects the cushioning mat from direct exposure to exhaust gases, and they hold the ceramic catalyst in proper alignment. MagnaFlow converters use a monolithic honeycomb catalyst; the ceramic coating is designed for maximum flow and surface area, and the coating method is strictly controlled to maintain exact specifications. Improper coating could result in flow restrictions or an emissions test failure. These converters are designed to exact OE specifications and are available for the most popular vehicle makes and models.