{"product_id":"catalytic-converter-for-toyota-fj-cruiser-2007-2009-4-0l-left-right","title":"Catalytic Converter for Toyota FJ Cruiser (2007-2009) 4.0L Left \u0026 Right","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Manifold Catalytic Converter Set for 2007-2009 Toyota FJ Cruiser (GSJ15)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit catalytic converter set replaces worn factory exhaust manifolds on the 2007-2009 Toyota FJ Cruiser to clear P0420\/P0430 efficiency codes and restore correct exhaust gas velocity.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Toyota FJ Cruiser Substrate Deterioration\u003c\/h3\u003e\n\u003cp\u003eOver extended mileage, factory exhaust manifold assemblies on the \u003cstrong\u003eGSJ15\u003c\/strong\u003e platform suffer from internal ceramic substrate thermal fatigue, washcoat sintering, and hairline flange cracking caused by repeated heat cycling. On the \u003cstrong\u003e1GR-FE\u003c\/strong\u003e 4.0L engine, degraded catalytic media restricts exhaust flow, spikes pre-turbine backpressure, and triggers downstream oxygen sensor faults that destabilize fuel trim mapping and reduce mid-range torque delivery under trail load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a pair for left (driver) and right (passenger) banks, these direct-fit catalytic converters replace high-mileage assemblies without cutting or welding. Constructed with durable steel outer shells, precision-machined heavy-gauge mounting flanges, and robust internal precious-metal washcoats, this pair restores emissions conversion efficiency. Precision-located oxygen sensor ports accommodate factory sensors, while smooth internal geometry maintains critical scavenging velocity across the cylinder head exhaust ports. Designed for federal emissions compliance (EPA standard; non-CARB compliant; cannot ship to CA or NY).\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;\"\u003e2007-2009 Toyota FJ Cruiser\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;\"\u003e\n\u003cstrong\u003e1GR-FE\u003c\/strong\u003e (4.0L V6) \/ \u003cstrong\u003eGSJ15\u003c\/strong\u003e\n\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;\"\u003e239 hp \/ 278 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;\"\u003e\n\u003cstrong\u003e673-796\u003c\/strong\u003e, \u003cstrong\u003e673-797\u003c\/strong\u003e, \u003cstrong\u003e674-796\u003c\/strong\u003e, \u003cstrong\u003e51326\u003c\/strong\u003e, \u003cstrong\u003e51327\u003c\/strong\u003e\n\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\u003e2007-2009 Toyota FJ Cruiser Base 4.0L V6 (1GR-FE)\u003c\/li\u003e\n  \u003cli\u003e2007 Toyota FJ Cruiser TRD Special Edition 4.0L V6 (1GR-FE)\u003c\/li\u003e\n  \u003cli\u003e2008 Toyota FJ Cruiser Trail Teams Special Edition 4.0L V6 (1GR-FE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GSJ15 FJ Cruiser?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2007-2009 Toyota FJ Cruiser equipped with the 4.0L \u003cstrong\u003e1GR-FE\u003c\/strong\u003e V6 engine.\u003c\/p\u003e\n\n\u003ch4\u003eWill this resolve catalyst efficiency DTCs like P0420 and P0430?\u003c\/h4\u003e\n\u003cp\u003eYes, replacing deteriorated factory converters with this fresh substrate assembly clears catalytic threshold codes when upstream air-fuel ratios and sensors are operating within specification.\u003c\/p\u003e\n\n\u003ch3\u003eThe Toyota Durability Standard\u003c\/h3\u003e\n\u003cp\u003eOff-road utility demands robust thermal stability. By maintaining structural flange integrity and factory manifold geometry, these converters withstand steep trail inclines, heavy payload stress, and severe thermal cycles typical of off-grid utility.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67537919246584,"sku":"DS-ED0ITU5PF","price":158.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-toyota-fj-cruiser-2007-2009-4-0l-left-right-1.jpg?v=1790619663","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-toyota-fj-cruiser-2007-2009-4-0l-left-right","provider":"Performance Chip Tuning","version":"1.0","type":"link"}