{"product_id":"catalytic-converter-for-buick-lacrosse-2005-2009-3-8l","title":"Catalytic Converter for Buick LaCrosse (2005-2009) 3.8L","description":"\u003ch2\u003eDirect-Fit Catalytic Converter for 2005-2009 Buick LaCrosse\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect emissions replacement:\u003c\/strong\u003e Restores balanced exhaust flow dynamics and eliminates catalyst efficiency diagnostic trouble codes on 3.8L GM platforms without requiring custom pipe fabrication.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock LaCrosse Substrate Degradation\u003c\/h3\u003e\n\u003cp\u003eWith extended thermal cycling and mileage, the factory catalytic converter on the W-Body platform suffers from washcoat sintering, structural cell breakdown, and carbon poisoning. In the 3800 Series III engine, age-related unburned hydrocarbons and oil vapor glaze the ceramic monolith, leading to restricted exhaust scavenging, elevated backpressure against exhaust valves, sluggish throttle response, and persistent P0420 trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement converter utilizes a durable stainless steel outer shell designed to withstand road debris impact and harsh underbody corrosion. Inside, a high-porosity ceramic honeycomb substrate is engineered with optimal cell density to maximize exhaust gas surface contact, enabling rapid light-off and efficient catalytic reduction of NOx, CO, and HC. Precision-welded, OEM-spec bolt flanges align directly with factory downpipe and intermediate pipe locations, utilizing included hardware and crush gaskets to guarantee a leak-free seal.\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;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2005-2009 Buick LaCrosse\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e3.8L 3800 Series III V6 (L26) \/ GM W-Body\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e200 hp \/ 230 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eBER512055 (Interchange: 54752, 642278, 41422)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2005 Buick LaCrosse CX \/ CXL (3.8L V6 L26)\u003c\/li\u003e\n  \u003cli\u003e2006 Buick LaCrosse CX \/ CXL (3.8L V6 L26)\u003c\/li\u003e\n  \u003cli\u003e2007 Buick LaCrosse CX \/ CXL (3.8L V6 L26)\u003c\/li\u003e\n  \u003cli\u003e2008 Buick LaCrosse CX \/ CXL (3.8L V6 L26)\u003c\/li\u003e\n  \u003cli\u003e2009 Buick LaCrosse CX \/ CXL (3.8L V6 L26)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Buick Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to uphold the refined cabin acoustics and steady highway efficiency expected of a long-wheelbase Buick cruiser, this converter maintains stock backpressure parameters to prevent cabin drone while keeping the Check Engine Light off.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50489368936696,"sku":"DS-EAWHE0BB5","price":138.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-buick-lacrosse-2005-2009-3-8l-1.jpg?v=1789160157","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-buick-lacrosse-2005-2009-3-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}