Walker 50486 Catalytic Converter

Walker EPA 50486 Catalytic Converter

Walker EPA 50486 is a direct-fit catalytic converter built for specific 2007-2010 GM truck and SUV applications with Federal Emission systems. It is designed for front converter placement and uses a stainless steel body with a ceramic substrate for OE-style exhaust routing and emissions control.

Walker’s EPA Ultra Direct-Fit Catalytic Converter line focuses on application-specific fitment for 1996-and-newer OBDII vehicles, with compliance-oriented construction for federal-emissions use. This part number, 50486, is listed for select Cadillac Escalade, Chevrolet Silverado 1500, GMC Sierra 1500, Yukon, and Yukon XL 1500 applications.

• Direct-fit catalytic converter for specific vehicle applications
• Front converter position with OE-style flange connections
• Stainless steel body construction
• Ceramic substrate material
• Pre- and post-catalyst oxygen sensor locations
• EPA Federal Emission system application
• Cross-reference: Eastern Catalytic 50453

Detailed Fitment and Construction

Walker 50486 uses a 3-bolt welded flange inlet and a 3-bolt loose flange with spherical flare inlet connection, plus a 2-bolt welded flange outlet connection. The converter body measures 10 inches long, 6 inches high, and 4.5 inches wide, with an overall length of 36.75 inches. The design is specific fit, not universal, and is built for front converter placement on the listed GM platforms. If you are replacing an emissions component on a Chevrolet Silverado 1500 or GMC Sierra 1500, this part number 50486 is built around the factory-style exhaust layout.

What This Part Helps Address

• Failed catalytic converter efficiency codes
• Exhaust restriction from a worn or damaged converter
• Emissions test failures on federal-emissions vehicles
• Check engine lights related to catalyst performance
• Exhaust leaks at the converter connection points

Installation Notes

• Fits 2007-2010 Cadillac Escalade, front
• Fits 2007-2010 Cadillac Escalade ESV, front
• Fits 2007-2010 Cadillac Escalade EXT, front
• Fits 2009-2010 Chevrolet Silverado 1500, front
• Fits 2009-2010 GMC Sierra 1500, front
• Fits 2007 GMC Sierra 1500, front
• Fits 2007-2010 GMC Yukon, front
• Fits 2007-2010 GMC Yukon XL 1500, front
• Fits 2009 Chevrolet Tahoe, front
• Fits 2008 Chevrolet Tahoe, front
• Fits 2008 GMC Sierra 1500, front

Exhaust gasket is recommended during installation. Additional parts may be required to complete the job on some applications, including 31554 right-hand side and 31718 left-hand side components noted in the fitment data. Verify Federal Emission system configuration before ordering, since this part is not legal for sale or use in California and other CARB-compliant states.

Quality Assurance

Walker EPA catalytic converters are built for direct-fit replacement on listed OBDII vehicles and are engineered to meet EPA standards for the specified federal-emissions applications. Part number 50486 is intended for exact-fit replacement where the original exhaust layout and sensor placement match the cataloged vehicle coverage.