{"product":{"id":11350214148438,"title":"Kooks Hellcat 2-inch H.O. GREEN Header Kit with Full 3-inch Outlets | 3103H641","body_html":"\u003ch2\u003eA full 3-inch connection for your Hellcat build\u003c\/h2\u003e\u003cp\u003eIf your Hellcat exhaust is being built around full 3\" pipework, choose the Kooks kit with a 3\" rear outlet. It combines 2\" long tube headers and H.O. GREEN catted connections, keeping the front conversion matched to that larger rear system instead of reducing to the factory outlet.\u003c\/p\u003e\u003cp\u003eSKU: 3103H641\u003c\/p\u003e\u003ch2\u003eChoose the full-size rear interface\u003c\/h2\u003e\u003cp\u003e3103H641 uses 2\" primaries, 3\" collectors and 3\"-outlet H.O. GREEN connection pipes. The rear exhaust needs a matching 3\" connection. For a factory-style rear interface, the separate 3103H640 kit uses a 2-3\/4\" outlet.\u003c\/p\u003e\u003ch2\u003eMatch the upgrade to your Hellcat\u003c\/h2\u003e\u003cp\u003eThe kit is for the 6.2-litre supercharged Charger and Challenger Hellcat applications. H.O. GREEN gives you the appropriate high-output catalyst family for this kind of engine. Plan the headers, front pipes and rear system together so the finished exhaust matches your build.\u003c\/p\u003e\u003ch2\u003eTuning for your exhaust upgrade\u003c\/h2\u003e\u003cp\u003eWe recommend tuning with every header installation so the calibration suits your new headers, complete exhaust and fuel. \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/pages\/contact\"\u003eContact us\u003c\/a\u003e to discuss the right tuning route for your vehicle.\u003c\/p\u003e\u003ch2\u003eVehicle fitment\u003c\/h2\u003e\u003cdiv class=\"table-scroll\"\u003e\u003ctable class=\"vehicle-fitment\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eYears\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eVehicle \/ trim\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eEngine\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eApplicable SKU\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eFitting conditions\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2023\u003c\/td\u003e\n\u003ctd\u003eDodge Charger SRT Hellcat Redeye Widebody\u003c\/td\u003e\n\u003ctd\u003e6.2L V8\u003c\/td\u003e\n\u003ctd\u003e3103H641\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2023\u003c\/td\u003e\n\u003ctd\u003eDodge Charger SRT Hellcat Widebody\u003c\/td\u003e\n\u003ctd\u003e6.2L V8\u003c\/td\u003e\n\u003ctd\u003e3103H641\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv class=\"table-scroll\"\u003e\u003ctable class=\"technical-specifications\"\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\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e3103H641\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eCharger Hellcat 6.2L; the two listed 2021-2023 Widebody applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeaders\u003c\/td\u003e\n\u003ctd\u003e2\" primaries; 3\" collectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalysts\u003c\/td\u003e\n\u003ctd\u003eH.O. GREEN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear outlet\u003c\/td\u003e\n\u003ctd\u003eFull 3\" outlet for a matching aftermarket exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear exhaust requirement\u003c\/td\u003e\n\u003ctd\u003eMatching 3\" system; does not connect directly to OEM exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWill it connect straight to the factory exhaust?\u003c\/h3\u003e\u003cp\u003eThis version has a full 3\" rear outlet and needs a matching rear system. The OEM-outlet kit is 3103H640.\u003c\/p\u003e\u003ch3\u003eWhat is included?\u003c\/h3\u003e\u003cp\u003eThe 2\" long tube headers and matching H.O. GREEN catted front connection pipes.\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","vendor":"Kooks","product_type":"Header Kits","created_at":"2026-10-08T10:41:28+01:00","handle":"kooks-2009-2023-dodge-charger-challenger-header-conn-kits-057be65b","updated_at":"2026-10-11T02:22:13+01:00","published_at":"2026-10-09T13:39:29+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, dept:performance-parts, fits:chrysler-300, fits:dodge-challenger, fits:dodge-charger, fits:dodge-magnum, make:chrysler, make:dodge, type:header-kit","variants":[{"id":55646903042390,"product_id":11350214148438,"title":"6.2L Hellcat \/ 2\" \/ H.O. GREEN Cats (3\" Outlet)","price":"4269.98","sku":"3103H641","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"6.2L Hellcat","option2":"2\"","option3":"H.O. GREEN Cats (3\" Outlet)","created_at":"2026-10-08T10:41:28+01:00","updated_at":"2026-10-11T02:22:13+01:00","taxable":true,"barcode":"842422179953","grams":29484,"image_id":null,"weight":29.484,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]}],"options":[{"id":14512397648214,"product_id":11350214148438,"name":"Vehicle Trim","position":1,"values":["6.2L Hellcat"]},{"id":14512397680982,"product_id":11350214148438,"name":"Header Size","position":2,"values":["2\""]},{"id":14512397713750,"product_id":11350214148438,"name":"Cat Type","position":3,"values":["H.O. GREEN Cats (3\" Outlet)"]}],"images":[{"id":86449267507542,"product_id":11350214148438,"position":1,"created_at":"2026-10-08T10:41:28+01:00","updated_at":"2026-10-08T10:41:30+01:00","alt":"Kooks 2\" Header and Full 3\" H.O. Green Conn. 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