{"product_id":"kooks-2015-2026-ford-mustang-gt-5-0l-header-conn-kits-292187a7","title":"Kooks Header and Connection Kits for Mustang GT \/ Dark Horse 5.0 (2015-2026)","description":"\u003ch2\u003eA complete header upgrade for your Mustang\u003c\/h2\u003e\u003cp\u003eEnjoy the character of your Coyote with a header package that includes the connections to finish the job. These Kooks kits combine long tube headers, front connection pipes and OEM adapters for the 2015-2026 Mustang GT and the 2024-2026 Dark Horse 5.0. Choose from the actual primary and catalyst combinations below, whether your plans centre on a naturally aspirated car or a more powerful forced-induction build.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSKUs:\u003c\/strong\u003e 1151H222, 1151H232, 1151H442, 1151H452, 1151H632, 1151H642, 1151H6SS\u003c\/p\u003e\u003ch2\u003eChoose the kit around your engine\u003c\/h2\u003e\u003cp\u003eThe primary size and catalyst type are separate decisions. Primary diameter should suit the engine output and rev range; the catalyst needs to suit the engine power and whether it uses a supercharger or turbo. Performance Cats are for naturally aspirated engines. GREEN, H.O. GREEN and ULTRA-GREEN options support forced-induction applications within their respective ratings.\u003c\/p\u003e\u003ch2\u003eWhat changes between the GREEN versions\u003c\/h2\u003e\u003cp\u003eGREEN uses a 400 CPSI substrate in a 4\" catalyst body. H.O. GREEN uses a 300 CPSI substrate in a larger 4-1\/2\" body for higher-output applications. ULTRA-GREEN uses a 400 CPSI substrate in a 4-1\/2\" body with additional precious-metal content. CPSI means cells per square inch: it describes the catalyst substrate, rather than a horsepower gain.\u003c\/p\u003e\u003ch2\u003eHeaders, connections and fitting parts together\u003c\/h2\u003e\u003cp\u003eThe 304 stainless headers have mandrel-bent primaries, 3\/8\" laser-cut flanges and 3\" collectors with a scavenging spike. The kits include the front connections, OEM adapters, gaskets, O2 extensions, clamps and bolts for the OEM-exhaust connection. The ULTRA-GREEN kit also includes O2 spacers.\u003c\/p\u003e\u003ch2\u003eTwo pipe sets with Street\/Strip\u003c\/h2\u003e\u003cp\u003eThe Street\/Strip package includes H.O. GREEN catted front pipes and a separate set of competition-only front pipes. You can fit the catted set and retain the other pipes for a dedicated track installation. The competition pipes are not for public-road use, and this package requires a Kooks competition-use waiver.\u003c\/p\u003e\u003ch2\u003eFitting and calibration\u003c\/h2\u003e\u003cp\u003eWe recommend professional installation. Sensor leads, engine-bay clearance and the connection to your rear exhaust should be checked together, with fasteners checked after the first heat cycle.\u003c\/p\u003e\u003ch2\u003eTuning for your header upgrade\u003c\/h2\u003e\u003cp\u003eWe recommend a tune with these headers, matched to your engine and the completed exhaust. For a 2015-2017 GT 5.0, see our \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/ford-mustang-gt-5-0l-v8-2015-2017-custom-ecu-tuning\"\u003eMustang GT custom ECU tuning\u003c\/a\u003e. For 2024+ cars, we have \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/ford-mustang-gt-s650-5-0l-v8-ecu-remap-2024-stage-1-custom-tuning\"\u003eGT S650 tuning\u003c\/a\u003e and \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/ford-mustang-dark-horse-s650-5-0l-v8-ecu-tuning-2024-custom-mustang-dark-horse-remap\"\u003eDark Horse tuning\u003c\/a\u003e listings. The S650 listings cover Stage 1 tuning; \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/pages\/contact\"\u003econtact us\u003c\/a\u003e to discuss calibration for your header conversion before booking. For a 2018-2023 GT, Bullitt or Mach 1, \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/pages\/contact\"\u003eget in touch\u003c\/a\u003e to discuss tuning for your car.\u003c\/p\u003e\u003ch2\u003eChoose your option\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSKU\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eHeader Size\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eCat Type\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eFitting \/ contents\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eStated use restriction\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1151H222\u003c\/td\u003e\n\u003ctd\u003e1-3\/4\"\u003c\/td\u003e\n\u003ctd\u003ePerformance Cats\u003c\/td\u003e\n\u003ctd\u003eOEM adapters; naturally aspirated application only.\u003c\/td\u003e\n\u003ctd\u003eCompetition, off-road and track use only. Not for use on public roads.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1151H232\u003c\/td\u003e\n\u003ctd\u003e1-3\/4\"\u003c\/td\u003e\n\u003ctd\u003eGREEN Cats\u003c\/td\u003e\n\u003ctd\u003eOEM adapters; GREEN catalysts support naturally aspirated or forced-induction applications.\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1151H442\u003c\/td\u003e\n\u003ctd\u003e1-7\/8\"\u003c\/td\u003e\n\u003ctd\u003eH.O. GREEN Cats\u003c\/td\u003e\n\u003ctd\u003eOEM adapters; larger-body H.O. GREEN catalysts.\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1151H452\u003c\/td\u003e\n\u003ctd\u003e1-7\/8\"\u003c\/td\u003e\n\u003ctd\u003eULTRA GREEN Cats\u003c\/td\u003e\n\u003ctd\u003eOEM adapters and O2 spacers; larger-body ULTRA-GREEN catalysts.\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1151H632\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003eGREEN Cats\u003c\/td\u003e\n\u003ctd\u003eOEM adapters; GREEN catalysts.\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1151H642\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003eH.O. GREEN Cats\u003c\/td\u003e\n\u003ctd\u003eOEM adapters; larger-body H.O. GREEN catalysts.\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1151H6SS\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003eStreet\/Strip\u003c\/td\u003e\n\u003ctd\u003eIncludes BOTH H.O. GREEN catted front pipes and a separate competition-only front-pipe set, plus OEM adapters.\u003c\/td\u003e\n\u003ctd\u003eCompetition, off-road and track use only. Not for use on public roads. Kooks competition-use waiver required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eVehicle fitment\u003c\/h2\u003e\u003ctable class=\"vehicle-fitment\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eYears\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eVehicle and trim\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eEngine\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eApplicable SKU \/ fitting conditions\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2026\u003c\/td\u003e\n\u003ctd\u003eFord Mustang GT\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e1151H222, 1151H232, 1151H442, 1151H452, 1151H632, 1151H642, 1151H6SS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2026\u003c\/td\u003e\n\u003ctd\u003eFord Mustang GT Premium\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e1151H222, 1151H232, 1151H442, 1151H452, 1151H632, 1151H642, 1151H6SS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015\u003c\/td\u003e\n\u003ctd\u003eFord Mustang GT 50 Years Limited Edition\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e1151H222, 1151H232, 1151H442, 1151H452, 1151H632, 1151H642, 1151H6SS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2020\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Bullitt\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e1151H222, 1151H232, 1151H442, 1151H452, 1151H632, 1151H642, 1151H6SS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2023\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Mach 1\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e1151H222, 1151H232, 1151H442, 1151H452, 1151H632, 1151H642, 1151H6SS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2024-2026\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Dark Horse\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e1151H222, 1151H232, 1151H442, 1151H452, 1151H632, 1151H642, 1151H6SS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2024-2026\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Dark Horse Premium\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e1151H222, 1151H232, 1151H442, 1151H452, 1151H632, 1151H642, 1151H6SS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMustang GT 5.0, 2015-2026; Dark Horse 5.0, 2024-2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003e304 stainless steel; mandrel-bent primaries; 3\/8\" laser-cut flanges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector design\u003c\/td\u003e\n\u003ctd\u003e3\" collectors with scavenging spike\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupplied exhaust parts\u003c\/td\u003e\n\u003ctd\u003eLong tube header pair, front connection pipes and OEM adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupplied fitting parts\u003c\/td\u003e\n\u003ctd\u003eGaskets, O2 extensions, clamps and bolts; O2 spacers also included with ULTRA-GREEN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalyst design choices\u003c\/td\u003e\n\u003ctd\u003ePerformance Cats; GREEN; H.O. GREEN; ULTRA-GREEN; Street\/Strip with H.O. GREEN pipes plus a separate competition pipe set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration\u003c\/td\u003e\n\u003ctd\u003eHoonies recommends a tune matched to the completed header and exhaust installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eDoes this include the headers and adapters?\u003c\/h3\u003e\u003cp\u003eYes. These are header and front-connection packages with OEM adapters and the listed fitting parts, ready to join the compatible OEM rear exhaust.\u003c\/p\u003e\u003ch3\u003eWhat does Street\/Strip actually supply?\u003c\/h3\u003e\u003cp\u003eIt supplies the headers and OEM adapters with two front-pipe sets: H.O. GREEN catted pipes and separate competition-only pipes. The track pipes are not for public-road use.\u003c\/p\u003e\u003ch3\u003eCan I use Performance Cats with a supercharger?\u003c\/h3\u003e\u003cp\u003eNo. Performance Cats are for naturally aspirated applications. Choose an appropriate GREEN-family catalyst for forced induction and match its capacity to the build.\u003c\/p\u003e\u003ch3\u003eWill a catted kit guarantee no check-engine light?\u003c\/h3\u003e\u003cp\u003eNo catalyst choice guarantees the warning light will stay off. Match the hardware and calibration to the completed engine and exhaust.\u003c\/p\u003e\u003ch3\u003eIs every size available with every catalyst?\u003c\/h3\u003e\u003cp\u003eThe table shows the combinations we actually offer. Choose a listed SKU rather than assuming every primary and catalyst can be combined.\u003c\/p\u003e\u003ch2\u003eOrdering and delivery\u003c\/h2\u003e\u003cp\u003eEstimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.\u003c\/p\u003e","brand":"Kooks","offers":[{"title":"1-3\/4\" \/ Performance Cats","offer_id":55646910972246,"sku":"1151H222","price":2787.18,"currency_code":"GBP","in_stock":true},{"title":"1-3\/4\" \/ GREEN Cats","offer_id":55646911005014,"sku":"1151H232","price":3355.17,"currency_code":"GBP","in_stock":true},{"title":"1-7\/8\" \/ H.O. GREEN Cats","offer_id":55646911037782,"sku":"1151H442","price":3902.41,"currency_code":"GBP","in_stock":true},{"title":"1-7\/8\" \/ ULTRA GREEN Cats","offer_id":55646911070550,"sku":"1151H452","price":4801.72,"currency_code":"GBP","in_stock":true},{"title":"2\" \/ GREEN Cats","offer_id":55646911103318,"sku":"1151H632","price":3494.83,"currency_code":"GBP","in_stock":true},{"title":"2\" \/ H.O. GREEN Cats","offer_id":55646911136086,"sku":"1151H642","price":4015.49,"currency_code":"GBP","in_stock":true},{"title":"2\" \/ Street\/Strip","offer_id":55646911168854,"sku":"1151H6SS","price":4242.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/b3a18e1a4cdcfb765f82e1488d67ccff_43bea1ee-1662-4ced-87fd-6b0f0280be6c.jpg?v=1791452509","url":"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-2015-2026-ford-mustang-gt-5-0l-header-conn-kits-292187a7","provider":"Hoonies Adrenaline","version":"1.0","type":"link"}