{"product":{"id":11350210380118,"title":"Kooks Mustang Boss 302 Header and Side-Connection H-Pipe Kit | 1141H280","body_html":"\u003ch2\u003eUpgrade your Boss without giving up its side-exhaust layout\u003c\/h2\u003e\u003cp\u003eYour Boss 302 has an exhaust arrangement worth keeping. This Kooks kit combines 1-3\/4\" long tube headers with a Performance-catted H-pipe that includes side-pipe connections, while its 2-3\/4\" rear outlets join the OEM exhaust.\u003c\/p\u003e\u003cp\u003eSKU: 1141H280\u003c\/p\u003e\u003ch2\u003eMade for the Boss arrangement\u003c\/h2\u003e\u003cp\u003eThe H-pipe includes the connections for the side pipes, giving you the correct crossover layout for the 2012-2013 Boss 302. It is a useful distinction from the other Mustang kits, whose X or H crossovers do not offer this same side-pipe provision.\u003c\/p\u003e\u003ch2\u003eHeaders and crossover matched together\u003c\/h2\u003e\u003cp\u003eThe 304 stainless headers have 3\" collectors feeding the supplied catted H-pipe. Performance cats suit the naturally aspirated 5.0-litre engine. Buying the combined kit brings the header and crossover specification together before fitting.\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\u003ctr\u003e\n\u003ctd\u003e2012-2013\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Boss 302\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e1141H280\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\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\u003e1141H280\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003e2012-2013 Mustang Boss 302 5.0L V8\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\u003e1-3\/4\" primaries; 3\" collectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrossover\u003c\/td\u003e\n\u003ctd\u003ePerformance-catted H-pipe with side-pipe connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear outlet\u003c\/td\u003e\n\u003ctd\u003e2-3\/4\" OEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalyst condition\u003c\/td\u003e\n\u003ctd\u003eNaturally aspirated only\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\u003eDoes the H-pipe have connections for the side pipes?\u003c\/h3\u003e\u003cp\u003eYes. That provision is part of this Boss 302 kit.\u003c\/p\u003e\u003ch3\u003eCan I use it with a supercharger?\u003c\/h3\u003e\u003cp\u003eThe supplied Performance cats are specified for naturally aspirated engines. Choose a forced-induction catalyst package for that build.\u003c\/p\u003e\u003ch3\u003eDo you recommend tuning with these headers?\u003c\/h3\u003e\u003cp\u003eWe recommend tuning with every header installation. \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/pages\/contact\"\u003eTalk to us\u003c\/a\u003e about calibration for your vehicle, exhaust and other modifications.\u003c\/p\u003e\u003ch2\u003eIntended use\u003c\/h2\u003e\u003cp\u003eCompetition, off-road and track use only. Not for use on public roads.\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":"2026-10-08T10:41:15+01:00","handle":"kooks-2011-2014-ford-mustang-gt-5-0l-header-conn-kits-0866879c","updated_at":"2026-10-10T19:23:09+01:00","published_at":"2026-10-09T13:41:29+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, dept:performance-parts, fits:ford-mustang, make:ford, type:header-kit","variants":[{"id":55646897897814,"product_id":11350210380118,"title":"1-3\/4\" \/ H Pipe W\/ Side Pipes \/ Performance Cats","price":"3480.64","sku":"1141H280","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"1-3\/4\"","option2":"H Pipe W\/ Side Pipes","option3":"Performance Cats","created_at":"2026-10-08T10:41:15+01:00","updated_at":"2026-10-10T19:23:09+01:00","taxable":true,"barcode":"842422179731","grams":28123,"image_id":null,"weight":28.123,"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":14512392765782,"product_id":11350210380118,"name":"Header Size","position":1,"values":["1-3\/4\""]},{"id":14512392798550,"product_id":11350210380118,"name":"Crossover Type","position":2,"values":["H Pipe W\/ Side Pipes"]},{"id":14512392831318,"product_id":11350210380118,"name":"Cat Type","position":3,"values":["Performance Cats"]}],"images":[{"id":86449222975830,"product_id":11350210380118,"position":1,"created_at":"2026-10-08T10:41:15+01:00","updated_at":"2026-10-08T10:41:18+01:00","alt":"Kooks 1-3\/4\" Header and Catted (H) Connection Kit. 2012-2013 302 Boss Mustang 5.0L","width":3300,"height":2550,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/3d9ada136f4839272f5654461dd679d9_55887c10-1b1f-4eb0-822f-8d6b16b2b5b5.jpg?v=1791452478","variant_ids":[]},{"id":86449223008598,"product_id":11350210380118,"position":2,"created_at":"2026-10-08T10:41:15+01:00","updated_at":"2026-10-08T10:41:18+01:00","alt":"Kooks 1-3\/4\" Header and Catted (H) Connection Kit. 2012-2013 302 Boss Mustang 5.0L","width":1500,"height":1500,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/ec4adf57a815f14827836d8303aab65c_87a02df8-e1e6-4660-921e-5e9d748abcd4.jpg?v=1791452478","variant_ids":[]},{"id":86449223041366,"product_id":11350210380118,"position":3,"created_at":"2026-10-08T10:41:15+01:00","updated_at":"2026-10-08T10:41:18+01:00","alt":"Kooks 1-3\/4\" Header and Catted (H) Connection Kit. 2012-2013 302 Boss Mustang 5.0L","width":1064,"height":1600,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/a4cfc316396ca4ccc50527f24189bce5_31d7ecf1-b7b4-4dd5-b549-e7577417374e.jpg?v=1791452478","variant_ids":[]},{"id":86449223074134,"product_id":11350210380118,"position":4,"created_at":"2026-10-08T10:41:15+01:00","updated_at":"2026-10-08T10:41:18+01:00","alt":"Kooks 1-3\/4\" Header and Catted (H) Connection Kit. 2012-2013 302 Boss Mustang 5.0L","width":2406,"height":1600,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/ec367ae7e7103c33da0d31f62816ba20_fbca716e-5522-4e3e-b324-93f1ef3c9160.jpg?v=1791452478","variant_ids":[]}],"image":{"id":86449222975830,"product_id":11350210380118,"position":1,"created_at":"2026-10-08T10:41:15+01:00","updated_at":"2026-10-08T10:41:18+01:00","alt":"Kooks 1-3\/4\" Header and Catted (H) Connection Kit. 2012-2013 302 Boss Mustang 5.0L","width":3300,"height":2550,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/3d9ada136f4839272f5654461dd679d9_55887c10-1b1f-4eb0-822f-8d6b16b2b5b5.jpg?v=1791452478","variant_ids":[]}}}