{"product_id":"catalytic-converter-for-ford-explorer-sport-trac-2001-2005-4-0l-front-rear","title":"Catalytic Converter for Ford Explorer Sport Trac (2001-2005) 4.0L Front \u0026 Rear","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Stainless Steel Catalytic Converter Assembly for 2001-2005 Ford Explorer Sport Trac (UN105)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit Front \u0026amp; Rear Catalytic Converter Set replaces deteriorated factory emissions equipment on the 2001-2005 Ford Explorer Sport Trac to eliminate P0420\/P0430 diagnostic trouble codes and restore factory exhaust velocity.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Explorer Sport Trac Catalytic Converter Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory catalytic units on the \u003cstrong\u003eUN105\u003c\/strong\u003e chassis succumb to long-term washcoat thermal degradation, internal ceramic substrate fracture, and carbon fouling after extended heat cycles. Operating the \u003cstrong\u003eCologne 4.0L SOHC V6\u003c\/strong\u003e under sustained towing loads elevates pre-catalyst exhaust gas temperatures, accelerating the breakdown of rare earth catalyst beds. Once the OEM honeycomb substrate crumbles or clogs, excessive exhaust backpressure chokes the cylinder heads, leading to downstream O2 sensor read errors, compromised fuel trims, and chronic check engine illumination.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive front and rear converter assembly delivers an exact-match direct replacement built from corrosion-resistant tubular \u003cstrong\u003eStainless Steel\u003c\/strong\u003e. Inside, high-efficiency ceramic honeycomb monoliths feature an optimized precious metal washcoat loading that ensures reliable catalytic reaction and proper hydrocarbon, CO, and NOx reduction. Precision mandrel-bent tube geometry maintains uniform exhaust flow dynamics and backpressure levels, matching factory scavenging parameters. Heavy-gauge laser-cut mounting flanges and pre-threaded oxygen sensor bungs mount straight to original hang points and Y-pipe junctions without requiring cutting or custom welding.\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;\"\u003e2001-2005 Ford Explorer Sport Trac\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;\"\u003e4.0L Cologne SOHC V6 \/ UN105\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;\"\u003e210 hp \/ 240 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;\"\u003e50202, 53500\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 Ford Explorer Sport Trac Base 4.0L V6\u003c\/li\u003e\n  \u003cli\u003e2002 Ford Explorer Sport Trac XL \/ XLT 4.0L V6\u003c\/li\u003e\n  \u003cli\u003e2003 Ford Explorer Sport Trac XLS \/ XLT 4.0L V6\u003c\/li\u003e\n  \u003cli\u003e2004 Ford Explorer Sport Trac XLS \/ XLT 4.0L V6\u003c\/li\u003e\n  \u003cli\u003e2005 Ford Explorer Sport Trac XLS \/ XLT \/ Adrenalin 4.0L V6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the UN105 Explorer Sport Trac?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2001-2005 Ford Explorer Sport Trac equipped with the 4.0L Cologne SOHC V6 engine.\u003c\/p\u003e\n\n\u003ch4\u003eIs this catalytic converter legal in all 50 states?\u003c\/h4\u003e\n\u003cp\u003eThis unit is 46-state emissions compliant and cannot be legally sold or installed in California, New York, Colorado, or Maine.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Truck Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle tough duty cycles, this stainless steel replacement assembly withstands off-road chassis vibration and high exhaust thermal shock, ensuring sustained payload hauling and towing durability without downstream emissions failures.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67537970528504,"sku":"DS-E76LM1HR8","price":240.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-ford-explorer-sport-trac-2001-2005-4-0l-front-rear-1.jpg?v=1790620207","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-ford-explorer-sport-trac-2001-2005-4-0l-front-rear","provider":"Performance Chip Tuning","version":"1.0","type":"link"}