{"product_id":"catalytic-converter-for-ford-excursion-2000-2005-5-4l-6-8l-lower","title":"Catalytic Converter for Ford Excursion (2000-2005) 5.4L\/6.8L Lower","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Lower Catalytic Converter for 2000-2005 Ford Excursion (U137)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit lower catalytic converter replaces degraded factory emissions units on the 2000-2005 Excursion to resolve catalyst-efficiency diagnostic trouble codes and restore exhaust scavenging.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Excursion Catalyst Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory catalytic converters on the heavy-duty \u003cstrong\u003eU137\u003c\/strong\u003e chassis undergo severe thermal cycling, exacerbated by sustained exhaust gas temperatures encountered during heavy towing. Over time, the internal ceramic brick suffers washcoat thermal sintering and micro-fracturing. This structural deterioration leads to mechanical washcoat attrition, reduced noble-metal surface reactivity, and loose ceramic fragments rattling within the casing, frequently triggering persistent \u003cstrong\u003eP0420\u003c\/strong\u003e and \u003cstrong\u003eP0430\u003c\/strong\u003e diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement lower assembly is constructed with heavy-gauge stainless steel tubing and a dual-wall outer shell designed to withstand corrosion, road debris, and prolonged heat soak. Inside, a high-cell-density ceramic honeycomb substrate features an optimized washcoat enriched with platinum, palladium, and rhodium to restore chemical reduction of NOx and oxidation of CO and hydrocarbons. Precision robotic welding ensures airtight joints, while factory-located sensor bungs and laser-cut flanges deliver true direct-fit alignment with OEM downpipes without cutting or welding.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Direct-fit lower catalytic converter\u003c\/li\u003e\n  \u003cli\u003eExhaust gasket(s) and mounting hardware\u003c\/li\u003e\n\u003c\/ul\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;\"\u003e2000-2005 Ford Excursion\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;\"\u003e5.4L Triton V8 \/ 6.8L Triton V10 \/ U137\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;\"\u003e255-310 hp \/ 350-425 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;\"\u003eN\/A\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\u003e2000-2005 Ford Excursion 5.4L V8 (Lower Position)\u003c\/li\u003e\n  \u003cli\u003e2000-2005 Ford Excursion 6.8L V10 (Lower Position)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the U137 Excursion?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2000-2005 Ford Excursion equipped with the \u003cstrong\u003e5.4L Triton V8\u003c\/strong\u003e or \u003cstrong\u003e6.8L Triton V10\u003c\/strong\u003e engine. \u003cstrong\u003eNot legal for sale or use in California or CARB-adopting states; not compatible with Powerstroke Diesel models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eWill this unit resolve catalyst efficiency trouble codes?\u003c\/h4\u003e\n\u003cp\u003eIt clears P0420 and P0430 codes caused by depleted catalyst efficiency, provided oxygen sensors and exhaust manifolds are free of leaks and functioning correctly.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Heavy-Duty Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle the demanding exhaust backpressures and prolonged thermal loads of full-size towing, this converter restores reliable emissions compliance and factory exhaust flow on heavy-duty Ford platforms.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67911339409656,"sku":"DS-EHTMO93DW","price":276.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-ford-excursion-2000-2005-5-4l-6-8l-lower-1.jpg?v=1793400757","url":"https:\/\/performancechiptuning.com\/es\/products\/catalytic-converter-for-ford-excursion-2000-2005-5-4l-6-8l-lower","provider":"Performance Chip Tuning","version":"1.0","type":"link"}