{"product_id":"walker-55557-catalytic-converter-left","title":"Walker 55557 Catalytic Converter - Left","description":"\u003ch2\u003eWalker EPA 55557 Catalytic Converter\u003c\/h2\u003e\u003cp\u003eWalker EPA 55557 is a direct-fit catalytic converter for select 2003-2007 Chevrolet Silverado and GMC Sierra trucks with Federal Emission systems. It uses a stainless steel body, a ceramic substrate, and OE-style inlet and outlet connections for a precise replacement on the left side.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit design for specific applications\u003c\/li\u003e\n\u003cli\u003eStainless steel body with small oval housing\u003c\/li\u003e\n\u003cli\u003eCeramic substrate material\u003c\/li\u003e\n\u003cli\u003e1 inlet and 1 outlet\u003c\/li\u003e\n\u003cli\u003e3-bolt welded flange inlet and 3-inch pipe connection outlet\u003c\/li\u003e\n\u003cli\u003ePre- and post-catalyst oxygen sensor locations\u003c\/li\u003e\n\u003cli\u003eEPA-compliant product line for OBDII vehicles\u003c\/li\u003e\n\u003cli\u003ePart number: 55557\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eWalker EPA 55557 is part of the Walker Ultra Direct-Fit Catalytic Converter line, built for import and domestic OBDII vehicles from 1996 and newer. This converter is engineered for specific truck applications and follows EPA standards, making it a practical replacement for emissions-system service on a Chevrolet Silverado 2500 HD, Silverado 3500, Silverado 3500 Classic, GMC Sierra 2500 HD, Sierra 3500, and Sierra 3500 Classic. The unit measures 50 inches overall, with a 10-inch body length, 6-inch body width, and 4.25-inch body height.\u003c\/p\u003e\u003cp\u003eThis part cross-references Eastern Catalytic 50423 for the same application.\u003c\/p\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2007 Chevrolet Silverado 3500 Classic, left, with Federal Emission System; not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended.\u003c\/li\u003e\n\u003cli\u003eFits 2007 GMC Sierra 3500 Classic, left, with Federal Emission System; not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended.\u003c\/li\u003e\n\u003cli\u003eFits 2003-2006 Chevrolet Silverado 2500 HD, left, with Federal Emission System; except Low Emission Vehicle (LEV). Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended.\u003c\/li\u003e\n\u003cli\u003eFits 2003-2006 Chevrolet Silverado 3500, left, with Federal Emission System; not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended.\u003c\/li\u003e\n\u003cli\u003eFits 2003-2006 GMC Sierra 2500 HD, left, with Federal Emission System; except Low Emission Vehicle (LEV). Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended.\u003c\/li\u003e\n\u003cli\u003eFits 2003-2006 GMC Sierra 3500, left, with Federal Emission System; not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended.\u003c\/li\u003e\n\u003cli\u003eFits 2004 Chevrolet Silverado 2500, left, with Federal Emission System; except Low Emission Vehicle (LEV). Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended.\u003c\/li\u003e\n\u003cli\u003eFits 2004 GMC Sierra 2500, left, with Federal Emission System; except Low Emission Vehicle (LEV). Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eConfirm Federal Emission system coverage before ordering, since this converter is not CARB certified. The 3-bolt welded flange inlet and pipe-style outlet are designed for direct replacement, and an exhaust gasket is recommended during installation. Verify oxygen sensor placement at both pre- and post-catalyst locations before final assembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker EPA 55557 is built to meet EPA standards for the listed applications and is part of Walker’s Ultra Direct-Fit line for OBDII vehicles. The stainless steel construction and application-specific fitment support consistent replacement quality for the covered Chevrolet Silverado and GMC Sierra models.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":52412213362869,"sku":"BDCN-55557","price":392.04,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WK_55557_Fro.jpg?v=1777784703","url":"https:\/\/www.partcatalog.com\/products\/walker-55557-catalytic-converter-left","provider":"PartCatalog","version":"1.0","type":"link"}