{"product":{"id":11350211658070,"title":"Kooks Camaro \/ Firebird LS1 Header and Y-Pipe Kits (1998-2002)","body_html":"\u003ch2\u003eMake your LS1 F-body even more enjoyable\u003c\/h2\u003e\u003cp\u003eGive your Camaro or Firebird a matched Kooks front exhaust upgrade with 1-7\/8\" long tube headers and a supplied catted Y-pipe. Choose Performance or GREEN cats, while keeping the 2-3\/4\" OEM rear connection for your LS1-powered F-body.\u003c\/p\u003e\u003cp\u003eSKUs: 2241H420, 2241H430\u003c\/p\u003e\u003ch2\u003eMatched headers and Y-pipe\u003c\/h2\u003e\u003cp\u003eBoth packages use 1-7\/8\" primaries and 3\" collectors. Their supplied stainless Y-pipes transition to the 2-3\/4\" OEM rear interface, giving you a coordinated conversion from the engine to the retained rear exhaust.\u003c\/p\u003e\u003ch2\u003eChoose the cats for your LS1 build\u003c\/h2\u003e\u003cp\u003ePerformance cats suit naturally aspirated applications. GREEN is the catted choice here that supports forced induction. If your LS1 has a supercharger or turbocharger, choose the catalyst around that finished setup rather than the original factory engine specification.\u003c\/p\u003e\u003ch2\u003eChoose your configuration\u003c\/h2\u003e\u003cdiv class=\"table-scroll\"\u003e\u003ctable class=\"variant-comparison\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSKU\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eConfiguration\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eSupplied arrangement\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eFitting \/ engine conditions\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2241H420\u003c\/td\u003e\n\u003ctd\u003eCat Type: Performance Cats\u003c\/td\u003e\n\u003ctd\u003eHeaders; Performance Cats front connections\u003c\/td\u003e\n\u003ctd\u003eNaturally aspirated only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2241H430\u003c\/td\u003e\n\u003ctd\u003eCat Type: GREEN Cats\u003c\/td\u003e\n\u003ctd\u003eHeaders; GREEN Cats front connections\u003c\/td\u003e\n\u003ctd\u003eUse the SKU-specific vehicle rows below\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\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\u003e1998-2002\u003c\/td\u003e\n\u003ctd\u003eChevrolet Camaro Z28 SS\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e2241H420, 2241H430\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1998-2002\u003c\/td\u003e\n\u003ctd\u003eChevrolet Camaro Z28\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e2241H420, 2241H430\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1998-2002\u003c\/td\u003e\n\u003ctd\u003ePontiac Firebird Formula\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e2241H420, 2241H430\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1998-2002\u003c\/td\u003e\n\u003ctd\u003ePontiac Firebird Trans Am\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e2241H420, 2241H430\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\u003eSKUs\u003c\/td\u003e\n\u003ctd\u003e2241H420, 2241H430\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003e1998-2002 Camaro \/ Firebird LS1 5.7L\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\u003e1-7\/8\" primaries; 3\" collectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eY-pipe\u003c\/td\u003e\n\u003ctd\u003ePerformance or GREEN catted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear outlet\u003c\/td\u003e\n\u003ctd\u003e2-3\/4\" OEM interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePerformance 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\u003eIs the Y-pipe a separate purchase?\u003c\/h3\u003e\u003cp\u003eIt is included in these header-and-connection kits.\u003c\/p\u003e\u003ch3\u003eWhich kit is the GREEN version?\u003c\/h3\u003e\u003cp\u003e2241H430. The Performance-catted version is 2241H420.\u003c\/p\u003e\u003ch2\u003eIntended use\u003c\/h2\u003e\u003cp\u003e2241H420: Competition, 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":"2026-10-08T10:41:19+01:00","handle":"kooks-1998-2002-camaro-firebird-ls1-header-conn-kits","updated_at":"2026-10-10T19:10:26+01:00","published_at":"2026-10-09T13:40:48+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, dept:performance-parts, fits:chevrolet-camaro, fits:pontiac-firebird, fits:pontiac-trans-am, make:chevrolet, make:pontiac, type:header-kit","variants":[{"id":55646899929430,"product_id":11350211658070,"title":"Performance Cats","price":"2963.55","sku":"2241H420","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Performance Cats","option2":null,"option3":null,"created_at":"2026-10-08T10:41:19+01:00","updated_at":"2026-10-10T19:10:26+01:00","taxable":true,"barcode":"842422177713","grams":39916,"image_id":null,"weight":39.916,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]},{"id":55646899962198,"product_id":11350211658070,"title":"GREEN Cats","price":"3531.54","sku":"2241H430","position":2,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"GREEN Cats","option2":null,"option3":null,"created_at":"2026-10-08T10:41:19+01:00","updated_at":"2026-10-10T19:10:26+01:00","taxable":true,"barcode":"842422177720","grams":39916,"image_id":null,"weight":39.916,"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":14512394502486,"product_id":11350211658070,"name":"Cat Type","position":1,"values":["Performance Cats","GREEN Cats"]}],"images":[{"id":86449228579158,"product_id":11350211658070,"position":1,"created_at":"2026-10-08T10:41:19+01:00","updated_at":"2026-10-08T10:41:22+01:00","alt":"Kooks 1998-2002 Camaro \/ Firebird LS1 Header\/Conn. 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