{"product_id":"catalytic-converter-for-ford-f-150-2001-2003-4-6l-left-right","title":"Catalytic Converter for Ford F-150 (2001-2003) 4.6L Left \u0026 Right","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Left \u0026amp; Right Catalytic Converter Assembly for 2001-2003 Ford F-150 (PN96)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Left \u0026amp; Right Catalytic Converter Assembly replaces degraded factory emissions units on the 2001-2003 Ford F-150 to restore correct exhaust scavenging, lower backpressure, and eliminate P0420\/P0430 check engine lights.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford F-150 Substrate Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory catalytic converters on the aging \u003cstrong\u003ePN96\u003c\/strong\u003e chassis suffer from thermal sintering and structural breakdown of the ceramic core. High-mileage \u003cstrong\u003eModular 4.6L V8\u003c\/strong\u003e engines subject the factory matrix to repeated extreme thermal cycles and blow-by contamination. Over time, internal washcoat erosion and fractured ceramic channels create severe exhaust bottlenecks, choking high-RPM gas expulsion, robbing low-end torque, and triggering persistent downstream catalyst efficiency fault codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a direct bolt-on solution for 4WD platforms, this dual-bank assembly features heavy-gauge stainless steel tubing precision-formed to match factory geometry without modification. Inside, flow-optimized ceramic monolith substrates provide balanced exhaust treatment via an active precious metal washcoat (platinum, palladium, rhodium) to clean emissions while reducing parasitic backpressure. Fully integrated mounting flanges and factory-located oxygen sensor bungs ensure OE-level seal integrity, preventing exhaust leaks and maintaining accurate sensor readings.\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;\"\u003e2001-2003 Ford F-150 (4WD Only)\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;\"\u003eModular 4.6L V8 \/ PN96\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;\"\u003e231 hp \/ 293 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;\"\u003e51839, 51171\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\u003e2001-2003 Ford F-150 Base 4.6L V8 4WD\u003c\/li\u003e\n  \u003cli\u003e2001-2003 Ford F-150 XL 4.6L V8 4WD\u003c\/li\u003e\n  \u003cli\u003e2001-2003 Ford F-150 XLT 4.6L V8 4WD\u003c\/li\u003e\n  \u003cli\u003e2001-2003 Ford F-150 Lariat 4.6L V8 4WD\u003c\/li\u003e\n  \u003cli\u003eNote: 4WD configurations only; does not fit 2WD models. 46-state legal (not CARB-approved for CA, NY, CO, ME).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the PN96 F-150?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2001-2003 Ford F-150 4WD equipped with the Modular 4.6L V8 engine.\u003c\/p\u003e\n\n\u003ch4\u003eWill this resolve P0420 and P0430 catalyst efficiency trouble codes?\u003c\/h4\u003e\n\u003cp\u003eYes, assuming the engine's closed-loop fuel metering and O2 sensors are functioning normally, this converter restores required oxygen storage capacity to clear efficiency codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Towing Standard\u003c\/h3\u003e\n\u003cp\u003eDesigned to handle high exhaust heat loads under steep grades and towing duties, this stainless replacement assembly maintains leak-free flange seals and durability under rigorous truck usage.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67537969381624,"sku":"DS-EI4JVKUOO","price":225.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-ford-f-150-2001-2003-4-6l-left-right-1.jpg?v=1790620173","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-ford-f-150-2001-2003-4-6l-left-right","provider":"Performance Chip Tuning","version":"1.0","type":"link"}