{"product_id":"valve-cover-gasket-and-glow-plug-kit-for-ford-f-250-f-350-f-450-f-550-1999-2003-7-3l","title":"Valve Cover Gasket and Glow Plug Kit for Ford F-250 F-350 F-450 F-550 (1999-2003) 7.3L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Valve Cover Gasket and Glow Plug Kit for 1999-2003 Ford F-250, F-350, F-450, F-550 (Super Duty)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Valve Cover Gasket and Glow Plug Kit replaces degraded pass-through harnesses, brittle seals, and worn glow plugs on the 1999-2003 Ford F-250, F-350, F-450, and F-550 to eliminate oil contamination, resolve injector misfires, and restore reliable cold starts.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford F-250, F-350, F-450, F-550 Under-Valve-Cover Harness and Gasket Failure\u003c\/h3\u003e\n\u003cp\u003eThe factory Under-Valve-Cover Harness (UVCH) and integral pass-through connectors on the \u003cstrong\u003e7.3L Powerstroke\u003c\/strong\u003e suffer severe degradation from continuous exposure to high engine oil temperatures and thermal cycling. Over time, the internal plastic clips fatigue, allowing the wiring pins to loosen and arc. This thermal fatigue melts the connector pins, creates intermittent open circuits to the HEUI injectors, and causes severe bank-specific misfires. Concurrently, factory glow plug heating elements wear out, developing high internal resistance or shorting, leading to hard cold starts, excessive white smoke, and unburned fuel washdown in cylinder bores.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit replaces fatigued factory electronics with heat-stabilized, high-temp fluoropolymer insulation and heavy-duty molded female connector housings engineered to resist continuous oil immersion up to 300°F. The valve cover gaskets integrate reinforced pass-through terminals to prevent pin loosening and oil weeping, while the high-impedance \u003cstrong\u003eF4TZ-12A342-BA\u003c\/strong\u003e replacement glow plugs utilize durable Inconel sheaths to endure high combustion pressures and prevent tip swelling. Replacing both banks alongside fresh main pigtails ensures proper voltage delivery across injector solenoids and restores factory glow plug preheat cycles.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e4 Fuel Injector Harnesses (UVCH)\u003c\/li\u003e\n  \u003cli\u003e4 Main Pigtails\u003c\/li\u003e\n  \u003cli\u003e2 Valve Cover Gaskets with Integrated Connectors\u003c\/li\u003e\n  \u003cli\u003e8 Glow Plugs\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;\"\u003e1999-2003 Ford F-250, F-350, F-450, F-550\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\u003e7.3L Powerstroke OHV Turbo-Diesel V8\u003c\/strong\u003e \/ \u003cstrong\u003eSuper Duty\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;\"\u003e215-275 hp \/ 425-525 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\u003eF4TZ-9D930-K\u003c\/strong\u003e, \u003cstrong\u003eF4TZ-6584-A\u003c\/strong\u003e, \u003cstrong\u003eF81Z-6584-AA\u003c\/strong\u003e, \u003cstrong\u003eF4TZ-12A342-BA\u003c\/strong\u003e, \u003cstrong\u003e615-202\u003c\/strong\u003e, \u003cstrong\u003e615-201\u003c\/strong\u003e, \u003cstrong\u003e1379998\u003c\/strong\u003e, \u003cstrong\u003eGP39727\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\u003e1999-2003 Ford F-250 Super Duty 7.3L Diesel\u003c\/li\u003e\n  \u003cli\u003e1999-2003 Ford F-350 Super Duty 7.3L Diesel\u003c\/li\u003e\n  \u003cli\u003e1999-2003 Ford F-450 Super Duty 7.3L Diesel\u003c\/li\u003e\n  \u003cli\u003e1999-2003 Ford F-550 Super Duty 7.3L Diesel\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 Super Duty F-250, F-350, F-450, F-550?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1999-2003 Ford F-250, F-350, F-450, and F-550 equipped with the \u003cstrong\u003e7.3L Powerstroke\u003c\/strong\u003e engine. \u003cstrong\u003eDoes not fit 2001 F-550 Super Duty Lariat Cab and Chassis Crew Cab models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to replace both sides simultaneously?\u003c\/h4\u003e\n\u003cp\u003eYes, replacing both valve cover gaskets and verifying injector and glow-plug pin seatings at the same time is strongly recommended to maintain balanced circuit resistance across both cylinder banks.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Heavy-Duty Reliability Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt for sustained heavy towing and high-mileage fleet durability, these upgraded UVCH harnesses and glow plugs ensure stable signal delivery and rapid combustion chamber ignition under extreme workload conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68058609516792,"sku":"DS-EM05IJFCJ","price":80.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/valve-cover-gasket-and-glow-plug-kit-for-ford-f-250-f-350-f-450-f-550-1999-2003-7-3l-1.jpg?v=1794360269","url":"https:\/\/performancechiptuning.com\/fr\/products\/valve-cover-gasket-and-glow-plug-kit-for-ford-f-250-f-350-f-450-f-550-1999-2003-7-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}