{"product_id":"catalytic-converter-for-isuzu-i-370-2007-2008-3-7l-front","title":"Catalytic Converter for Isuzu I-370 (2007-2008) 3.7L Front","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Front Catalytic Converter for 2007-2008 Isuzu I-370 (GMT355)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Direct-Fit Front Catalytic Converter replaces the degraded factory manifold catalyst on the 2007-2008 Isuzu I-370 to eliminate P0420 diagnostic trouble codes and restore proper exhaust scavenging.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Isuzu I-370 Catalyst Breakdown\u003c\/h3\u003e\n\u003cp\u003eOn the \u003cstrong\u003eGMT355\u003c\/strong\u003e platform running the \u003cstrong\u003eLLR 3.7L\u003c\/strong\u003e inline-5, the close-coupled front manifold converter absorbs extreme thermal shock directly off the cylinder head. Over miles of heat cycling, the factory ceramic matrix degrades, leading to washcoat depletion, substrate micro-fracturing, and carbon contamination. This deterioration creates severe exhaust backpressure, robs engine torque, and triggers constant emissions fault codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement converter assembly is engineered with a high-efficiency ceramic honeycomb core washcoated in active precious metals to exceed standard EPA operating requirements. Encased in heavy-gauge, heat-resistant stainless steel, the assembly resists casing expansion and weld fatigue. Precision-stamped direct-fit mounting flanges bolt directly to the factory manifold and downstream exhaust system using OE interchange dimensions (\u003cstrong\u003e16578\u003c\/strong\u003e, \u003cstrong\u003e641338\u003c\/strong\u003e, \u003cstrong\u003e19282\u003c\/strong\u003e), restoring exhaust flow without custom fabrication or cutting.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e2007-2008 Isuzu I-370\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;\"\u003e3.7L LLR \/ GMT355\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;\"\u003e242 hp \/ 242 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;\"\u003e16578, 641338, 19282, QS484128QR\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2007 Isuzu I-370 Extended Cab 3.7L L5\u003c\/li\u003e\n  \u003cli\u003e2007 Isuzu I-370 Crew Cab 3.7L L5\u003c\/li\u003e\n  \u003cli\u003e2008 Isuzu I-370 Extended Cab 3.7L L5\u003c\/li\u003e\n  \u003cli\u003e2008 Isuzu I-370 Crew Cab 3.7L L5\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT355 I-370?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2007-2008 Isuzu I-370 equipped with the \u003cstrong\u003eLLR\u003c\/strong\u003e 3.7L engine.\u003c\/p\u003e\n\n\u003ch4\u003eWill this unit resolve a P0420 catalytic efficiency code?\u003c\/h4\u003e\n\u003cp\u003eYes, replacing a degraded core with this unit restores converter oxidation thresholds to extinguish downstream O2 sensor fault codes when operating on a healthy engine.\u003c\/p\u003e\n\n\u003ch3\u003eThe Isuzu Truck Durability Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered for midsize truck hauling and sustained payload demands, this direct-fit catalytic converter delivers the structural toughness and exhaust velocity required to keep your truck running clean under load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67543932109048,"sku":"DS-EQ3WPNSC2","price":147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-isuzu-i-370-2007-2008-3-7l-front-1.jpg?v=1790695770","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-isuzu-i-370-2007-2008-3-7l-front","provider":"Performance Chip Tuning","version":"1.0","type":"link"}