{"product_id":"walker-16998-catalytic-converter-left","title":"Walker 16998 Catalytic Converter - Left","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eWalker EPA 16998 is a specific-fit catalytic converter built for OBDII vehicles and engineered to meet EPA standards. It uses a round ceramic substrate and direct-fit flange connections for a cleaner replacement on the exhaust system.\u003c\/p\u003e\u003cp\u003eFits 2018-2020 Buick Enclave, left. Fits 2018-2020 Chevrolet Traverse, left. This part cross-references AP Exhaust 644166 and Gates 23278 for the same application.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpecific-fit catalytic converter for direct replacement applications\u003c\/li\u003e\n\u003cli\u003eEPA-compliant design for 1996-and-newer OBDII vehicles\u003c\/li\u003e\n\u003cli\u003eRound body with ceramic substrate for exhaust flow and catalyst function\u003c\/li\u003e\n\u003cli\u003e4-bolt welded inlet flange and 2-bolt welded outlet flange\u003c\/li\u003e\n\u003cli\u003eIncludes inlet gasket, outlet gasket, and outlet mounting hardware\u003c\/li\u003e\n\u003cli\u003eTwo oxygen sensor ports with pre- and post-converter locations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eWalker EPA 16998 is part of the Ultra Direct-Fit Catalytic Converter line, which focuses on application-specific exhaust replacement with EPA-standard compliance. The converter uses a round body, ceramic substrate, and welded flange connections to match the original exhaust layout on supported Buick Enclave and Chevrolet Traverse applications. The 17-inch overall length and dual sensor-port layout support proper exhaust and emissions system integration.\u003c\/p\u003e\u003ch2\u003eCommon Repair Issues\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFailed catalytic converter efficiency codes\u003c\/li\u003e\n\u003cli\u003eExhaust restriction from a deteriorated substrate\u003c\/li\u003e\n\u003cli\u003eEmissions test failure related to converter performance\u003c\/li\u003e\n\u003cli\u003eDamaged flange connections or leaking exhaust joints\u003c\/li\u003e\n\u003cli\u003eFaults involving pre- and post-converter oxygen sensor monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify fitment by year, make, model, and left-side application before installation. Confirm gasket surfaces, sensor-port condition, and flange alignment during replacement. This converter uses welded inlet and outlet flange connections and is supplied with outlet mounting hardware.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker EPA 16998 is built to comply with EPA standards and is intended for OBDII applications. The Ultra Direct-Fit line is positioned as a premium replacement option for emissions-system service.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":53423926804661,"sku":"BDCN-16998","price":582.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WK_16998_Ang.jpg?v=1791095038","url":"https:\/\/www.partcatalog.com\/products\/walker-16998-catalytic-converter-left","provider":"PartCatalog","version":"1.0","type":"link"}