{"product_id":"walker-84777-catalytic-converter","title":"Walker 84777 Catalytic Converter","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eWalker CalCat 84777 is a direct-fit catalytic converter built for specific applications that require CARB compliance and OE-style fitment. It is engineered for vehicles with OBDII or non-OBD systems and uses a stainless steel body with a ceramic substrate for controlled exhaust treatment.\u003c\/p\u003e\u003cp\u003eCompatible With Chevrolet Silverado 1500, Chevrolet Tahoe, GMC Sierra 1500, and related applications listed below, this catalytic converter is part of the Walker CalCat line. The 84777 part number is also referenced for AP Exhaust 774766 in the same application.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCARB certified for applications that require California emissions compliance.\u003c\/li\u003e\n\u003cli\u003eDirect-fit design for a precise OE-style installation.\u003c\/li\u003e\n\u003cli\u003eStainless steel body with steel tubing for corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eCeramic substrate and three converter bodies for emissions control.\u003c\/li\u003e\n\u003cli\u003eHeat shield attached for added thermal protection.\u003c\/li\u003e\n\u003cli\u003ePre- and post-converter oxygen sensor ports with specific inlet and outlet configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eWalker CalCat 84777 is engineered as a premium catalytic converter for emissions repair on specific GM and Cadillac applications. The design includes two inlets, one outlet, four sensor ports, and a ball-style outlet, along with a 3-bolt welded flange on one inlet and a 3-bolt loose flange with spherical flare on the other. These details support a direct replacement that matches the original exhaust layout more closely than a universal converter.\u003c\/p\u003e\u003cp\u003eThe Walker CalCat product line focuses on direct-fit emissions components that meet CARB standards where required. For buyers searching for a catalytic converter for Chevrolet Suburban 1500, Chevrolet Avalanche, GMC Yukon XL 1500, or Cadillac Escalade, part number 84777 provides a specific-fit solution with the construction and certification details needed for regulated applications.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Fix\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFailed emissions testing related to catalytic converter efficiency.\u003c\/li\u003e\n\u003cli\u003eCheck engine lights tied to catalyst or oxygen sensor performance.\u003c\/li\u003e\n\u003cli\u003eExhaust restriction caused by a damaged or deteriorated converter.\u003c\/li\u003e\n\u003cli\u003eFitment issues from using a non-specific replacement converter.\u003c\/li\u003e\n\u003cli\u003eCompliance concerns on CARB-regulated applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the inlet flange style, outlet type, sensor port count, and overall exhaust configuration before installation. This part does not include clamps, gaskets, or mounting hardware, so the existing system should be inspected for wear before replacement. Confirm the vehicle application against the listed fitment data for Chevrolet Silverado 1500, GMC Sierra 1500, and the other supported models before ordering.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker CalCat converters are designed, tested, and validated to meet CARB standards for the listed applications. Part number 84777 is built as a specific-fit emissions component with OE-style dimensions and certification-focused construction.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":53417968664757,"sku":"BDCN-84777","price":891.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WK_84777_Ang.jpg?v=1791005493","url":"https:\/\/www.partcatalog.com\/products\/walker-84777-catalytic-converter","provider":"PartCatalog","version":"1.0","type":"link"}