{"product_id":"5-4l-v8-long-tube-headers-for-1999-2003-ford-f-150-includes-o2-sensor-ports-egr-hookup-stainless-steel-construction","title":"1999-2003 Ford F-150 5.4L V8 Long Tube Headers - Stainless Steel w\/ O2 Bungs \u0026 EGR Port - Performance Exhaust Upgrade","description":"\u003cdiv class=\"xkv-product-description\"\u003e\n\n  \u003cp\u003e\n    This stainless steel long tube header set is designed for page-listed Ford 5.4L V8 applications, including selected F-150, F-150 Heritage, F-250, Lightning, and Harley Davidson Edition models shown in the fitment information below. It is intended as an exhaust header replacement or upgrade-style component for compatible Ford 5.4L exhaust setups.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Built from T304 stainless steel with CNC-machined flanges, TIG-welded construction, 8 x 1.625\" diameter ports, 2.375\" outlets, 1.625\" manifold piping into 2 x 2.500\" exhaust pipes, O2 sensor bung provisions, EGR bung provisions, and metal gasket included as listed, this header set is designed to support a secure exhaust path where compatible. Final fitment, sound, exhaust sealing, drivability, and performance results may vary depending on vehicle condition, exhaust layout, O2 sensor setup, EGR connection, installation quality, emissions setup, and supporting components.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eProduct Overview\u003c\/h3\u003e\n  \u003cp\u003e\n    This product is a long tube exhaust header set for compatible Ford 5.4L V8 applications. It is not a catback exhaust system, downpipe, turbocharger, complete exhaust system, universal header kit, or full emissions delete product. Please verify your exact model year, trim, engine, supercharged application where applicable, flange layout, O2 sensor position, EGR hookup, exhaust connection, and emissions requirements before purchase.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Details\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Page-listed Ford 5.4L V8 applications\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Long Tube Exhaust Header Set\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e T304 stainless steel as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHeader Design:\u003c\/strong\u003e 2 x 4-2-1 racing-style design as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInlet \/ Port Size:\u003c\/strong\u003e 8 x 1.625\" diameter ports as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOutlet Size:\u003c\/strong\u003e 2.375\" as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePiping Reference:\u003c\/strong\u003e 8 x 1.625\" manifold piping into 2 x 2.500\" exhaust pipes as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSensor \/ EGR Provisions:\u003c\/strong\u003e O2 sensor bungs and EGR bung provisions as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Metal gasket included as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e TIG-welded CNC-machined flanges as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Professional installation highly recommended\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstruction:\u003c\/strong\u003e No installation instructions included unless otherwise stated on the product page\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUse Case:\u003c\/strong\u003e Off-road, racing, or closed-course use where emissions laws apply\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFitment\u003c\/h3\u003e\n  \u003cp\u003e\n    Please use the table below to quickly confirm the main vehicle applications currently listed for this Ford 5.4L header set. Before ordering, verify your exact model year, trim, engine, supercharged application where applicable, O2 sensor layout, EGR hookup, flange connection, downstream exhaust layout, and emissions setup.\n  \u003c\/p\u003e\n\n  \u003cdiv class=\"xkv-fitment-table-wrap\"\u003e\n    \u003ctable class=\"xkv-fitment-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eVehicle Name\u003c\/th\u003e\n          \u003cth\u003eYear\u003c\/th\u003e\n          \u003cth\u003eEngine\u003c\/th\u003e\n          \u003cth\u003eNotes\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eFord F-150\u003c\/td\u003e\n          \u003ctd\u003e1999–2003\u003c\/td\u003e\n          \u003ctd\u003e5.4L V8\u003c\/td\u003e\n          \u003ctd\u003eVerify trim, exhaust layout, O2 sensor position, EGR hookup, and flange connection\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eFord F-150 Heritage\u003c\/td\u003e\n          \u003ctd\u003e2004\u003c\/td\u003e\n          \u003ctd\u003e5.4L V8\u003c\/td\u003e\n          \u003ctd\u003eVerify Heritage model configuration and exhaust connection layout before purchase\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eFord F-250\u003c\/td\u003e\n          \u003ctd\u003e1997–1999\u003c\/td\u003e\n          \u003ctd\u003e5.4L V8\u003c\/td\u003e\n          \u003ctd\u003ePage-listed fitment; verify exact F-250 configuration before purchase\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eFord Lightning \/ Harley Davidson Edition\u003c\/td\u003e\n          \u003ctd\u003ePage-listed applications\u003c\/td\u003e\n          \u003ctd\u003e5.4L V8 Supercharged\u003c\/td\u003e\n          \u003ctd\u003eListed for Lightning and Harley Davidson Edition 5.4L V8 Supercharged models only; verify exact application\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xkv-fitment-note\"\u003e\n    \u003cstrong\u003eFitment Note:\u003c\/strong\u003e This table is based on the fitment information currently listed for this product. The product title focuses on 1999–2003 Ford F-150 5.4L, while the page-listed fitment also includes 2004 F-150 Heritage, 1997–1999 F-250, and Lightning \/ Harley Davidson Edition 5.4L V8 Supercharged applications. Please verify your exact model, trim, engine, supercharged application where applicable, O2 sensor layout, EGR hookup, flange connection, and emissions setup before purchase.\n  \u003c\/div\u003e\n\n  \u003ch3\u003ePackage Includes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eLong tube exhaust header components as shown\u003c\/li\u003e\n    \u003cli\u003eO2 sensor bung provisions as listed\u003c\/li\u003e\n    \u003cli\u003eEGR bung provisions as listed\u003c\/li\u003e\n    \u003cli\u003eMetal gasket included as listed\u003c\/li\u003e\n    \u003cli\u003eHardware, bolts, or additional accessories included only if shown or listed\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    Please review the product photos and listing details before installation. Confirm all included headers, gaskets, flanges, O2 \/ EGR provisions, fasteners, and connection requirements against the received package before beginning installation.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eProfessional installation is highly recommended.\u003c\/li\u003e\n    \u003cli\u003eTest fit both header sides before final tightening.\u003c\/li\u003e\n    \u003cli\u003eVerify cylinder head flange alignment, gasket seating, O2 sensor position, EGR hookup, collector connection, and downstream exhaust compatibility before installation.\u003c\/li\u003e\n    \u003cli\u003eCheck clearance around the steering shaft, starter, transmission, frame, firewall, suspension components, wiring, heat shields, and surrounding exhaust components.\u003c\/li\u003e\n    \u003cli\u003eVerify O2 sensor wire reach and EGR connection compatibility before final assembly.\u003c\/li\u003e\n    \u003cli\u003eOld, rusted, or seized factory hardware may increase installation difficulty.\u003c\/li\u003e\n    \u003cli\u003eModified exhaust systems, previous repairs, engine swaps, or non-factory configurations may require additional adjustment or fabrication.\u003c\/li\u003e\n    \u003cli\u003eInspect all exhaust connections for leaks after installation and recheck fasteners after initial heat cycles where appropriate.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eBefore You Buy\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eThis product is intended for page-listed Ford 5.4L V8 applications only.\u003c\/li\u003e\n    \u003cli\u003eThis is a long tube exhaust header set, not a catback exhaust system, downpipe, turbocharger, complete exhaust system, universal header kit, or full emissions delete product.\u003c\/li\u003e\n    \u003cli\u003ePlease verify your exact model year, trim, engine, supercharged application where applicable, flange layout, O2 sensor position, EGR hookup, downstream exhaust connection, and emissions setup before purchase.\u003c\/li\u003e\n    \u003cli\u003eLightning and Harley Davidson Edition applications are listed for 5.4L V8 Supercharged models only; verify exact vehicle configuration before ordering.\u003c\/li\u003e\n    \u003cli\u003eThis product may alter the factory exhaust or emissions-related configuration depending on the vehicle setup.\u003c\/li\u003e\n    \u003cli\u003eThis product is intended for off-road, racing, or closed-course use where emissions laws apply.\u003c\/li\u003e\n    \u003cli\u003eThis product is not represented as street legal, emissions-compliant, CARB-compliant, or legal for public road use unless explicitly stated.\u003c\/li\u003e\n    \u003cli\u003ePerformance gains, sound changes, exhaust flow changes, fitment, clearance, and drivability results are not guaranteed and may vary by setup.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n  .xkv-product-description {\n    font-family: Arial, sans-serif;\n    line-height: 1.5;\n    color: #333;\n  }\n\n  .xkv-product-description h3 {\n    margin-top: 28px;\n    margin-bottom: 12px;\n    color: #062E94;\n    font-size: 20px;\n    font-weight: 700;\n  }\n\n  .xkv-product-description p {\n    margin-bottom: 14px;\n  }\n\n  .xkv-product-description ul {\n    margin: 0 0 18px 20px;\n    padding: 0;\n  }\n\n  .xkv-product-description li {\n    margin-bottom: 8px;\n  }\n\n  .xkv-fitment-table-wrap {\n    width: 100%;\n    overflow-x: auto;\n    margin: 18px 0 20px;\n    border: 1px solid #d9dde5;\n    border-radius: 8px;\n    box-shadow: 0 2px 10px rgba(0,0,0,0.04);\n  }\n\n  .xkv-fitment-table {\n    width: 100%;\n    min-width: 760px;\n    border-collapse: collapse;\n    background: #fff;\n  }\n\n  .xkv-fitment-table th,\n  .xkv-fitment-table td {\n    border-right: 1px solid #e0e0e0;\n    border-top: 1px solid #e5e5e5;\n    padding: 13px 14px;\n    font-size: 15px;\n    line-height: 1.45;\n    text-align: left;\n    color: #444;\n  }\n\n  .xkv-fitment-table th:last-child,\n  .xkv-fitment-table td:last-child {\n    border-right: none;\n  }\n\n  .xkv-fitment-table thead th {\n    background-color: #2f4053;\n    color: #ffffff;\n    font-weight: 700;\n    text-transform: uppercase;\n    border-top: none;\n    border-right: 1px solid #1f2b39;\n  }\n\n  .xkv-fitment-table thead th:last-child {\n    border-right: none;\n  }\n\n  .xkv-fitment-table tbody tr:nth-child(even) {\n    background-color: #fafafa;\n  }\n\n  .xkv-fitment-table tbody tr:hover {\n    background-color: #f5f8fc;\n  }\n\n  .xkv-fitment-note {\n    margin: 14px 0 24px;\n    padding: 14px 16px;\n    background-color: #f8fafd;\n    border-left: 4px solid #062E94;\n    color: #333;\n    font-size: 14px;\n    line-height: 1.65;\n  }\n\n  @media (max-width: 768px) {\n    .xkv-product-description h3 {\n      font-size: 18px;\n    }\n\n    .xkv-product-description p,\n    .xkv-product-description li,\n    .xkv-fitment-table th,\n    .xkv-fitment-table td {\n      font-size: 14px;\n    }\n\n    .xkv-fitment-table th,\n    .xkv-fitment-table td {\n      padding: 11px 12px;\n    }\n\n    .xkv-fitment-table {\n      min-width: 720px;\n    }\n\n    .xkv-fitment-note {\n      font-size: 13px;\n      line-height: 1.6;\n    }\n  }\n\n  @media (max-width: 480px) {\n    .xkv-product-description h3 {\n      font-size: 17px;\n    }\n\n    .xkv-fitment-table {\n      min-width: 700px;\n    }\n  }\n\u003c\/style\u003e","brand":"XKVracing","offers":[{"title":"Default Title","offer_id":47887663366314,"sku":"XKV11061","price":246.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/9506\/3722\/files\/0_0037_MT001011-EH28139X-11061SAS.webp?v=1769757638","url":"https:\/\/xkvracing.com\/products\/5-4l-v8-long-tube-headers-for-1999-2003-ford-f-150-includes-o2-sensor-ports-egr-hookup-stainless-steel-construction","provider":"XKVracing","version":"1.0","type":"link"}