{"product_id":"catalytic-converter-for-buick-lucerne-2009-2011-3-9l-front","title":"Catalytic Converter for Buick Lucerne (2009-2011) 3.9L Front","description":"\u003ch2\u003eDirect-Fit Front Catalytic Converter for 2009-2011 Buick Lucerne\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit front catalytic converter replaces deteriorated OEM emissions assemblies on the 2009-2011 Buick Lucerne to restore exhaust velocity, clear catalyst efficiency trouble codes, and maintain proper backpressure.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Buick Lucerne Substrate Breakdown\u003c\/h3\u003e\n\u003cp\u003eFactory exhaust converters on the GM \u003cstrong\u003eG-Body\u003c\/strong\u003e platform paired with the \u003cstrong\u003eLZ9\u003c\/strong\u003e 3.9L V6 suffer from thermal fatigue and substrate washcoat sintering over extended mileage. As the factory ceramic monolith degrades from sustained exhaust gas temperatures, internal cell walls crumble or coat over, restricting upstream scavenging and causing downstream oxygen sensors to trigger P0420 DTCs. This restriction increases backpressure, robbing the pushrod V6 of mid-range torque and degrading fuel economy.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a bolt-on replacement for part reference \u003cstrong\u003eFCE016\u003c\/strong\u003e, this front assembly utilizes a heavy-gauge stainless steel outer shell paired with an aluminum-coated heat shield to withstand road debris and underbody thermal stress. Inside, a high-flow ceramic substrate is treated with a resilient precious-metal washcoat optimized for Federal EPA compliance, converting harmful hydrocarbons, carbon monoxide, and NOx into inert emissions. Laser-cut direct-fit flanges and included hardware ensure leak-free mating directly to the stock manifold and exhaust intermediate pipe without cutting or torch work.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2009-2011 Buick Lucerne\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e3.9L V6 (LZ9\/LGD) \/ GM G-Body\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e227 hp \/ 237 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eFCE016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2009 Buick Lucerne CX 3.9L V6 - Front\u003c\/li\u003e\n  \u003cli\u003e2009 Buick Lucerne CXL 3.9L V6 - Front\u003c\/li\u003e\n  \u003cli\u003e2010 Buick Lucerne CX 3.9L V6 - Front\u003c\/li\u003e\n  \u003cli\u003e2010 Buick Lucerne CXL 3.9L V6 - Front\u003c\/li\u003e\n  \u003cli\u003e2011 Buick Lucerne CX 3.9L V6 - Front\u003c\/li\u003e\n  \u003cli\u003e2011 Buick Lucerne CXL 3.9L V6 - Front\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the G-Body Lucerne?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2009-2011 Buick Lucerne equipped with the \u003cstrong\u003eLZ9\u003c\/strong\u003e 3.9L V6 engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this clear my P0420 catalytic converter code?\u003c\/strong\u003e\u003cbr\u003e Yes, provided upstream oxygen sensors and fuel trims are within operating limits, this converter restores required catalytic reduction efficiency to eliminate catalyst-related check engine lights.\u003c\/p\u003e\n\n\u003ch3\u003eThe Buick Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eThe Buick Lucerne is built for quiet highway cruising and smooth powertrain delivery. This replacement exhaust assembly restores original factory backpressure profiles and acoustic dampening, keeping cabin NVH low and the pushrod valvetrain running cleanly for thousands of reliable miles.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50501704614136,"sku":"DS-E5UNS3VQK","price":191.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-buick-lucerne-2009-2011-3-9l-front-1.jpg?v=1789329978","url":"https:\/\/performancechiptuning.com\/es\/products\/catalytic-converter-for-buick-lucerne-2009-2011-3-9l-front","provider":"Performance Chip Tuning","version":"1.0","type":"link"}