{"product":{"id":11350205661526,"title":"Kooks GM 1500 5.3L Performance-Catted Header and Y-Pipe Kit (2019+) | 2862H420","body_html":"\u003ch2\u003eGive your 5.3-litre truck a proper front exhaust upgrade\u003c\/h2\u003e\u003cp\u003eUpgrade your 5.3-litre GM V8 with 1-7\/8-inch Kooks long tube headers and a matching Performance-catted Y-pipe. Its 2-3\/4-inch OEM outlet lets you keep a compatible rear exhaust.\u003c\/p\u003e\u003cp\u003eSKU: 2862H420\u003c\/p\u003e\u003ch2\u003eThe rear connection is matched to the 5.3\u003c\/h2\u003e\u003cp\u003eThe kit uses 3\" collectors and a 3\" Y-pipe before reducing to the 2-3\/4\" OEM rear interface. That outlet is different from the equivalent 6.2 kit, so the 5.3 engine specification matters when choosing the complete package.\u003c\/p\u003e\u003ch2\u003eChoose the cats for your engine\u003c\/h2\u003e\u003cp\u003ePerformance cats suit a naturally aspirated 5.3-litre engine. For a supercharged or turbocharged truck, choose a catalyst package designed for forced induction. You can match your model, trim and year in the vehicle table.\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\u003eChevrolet Suburban\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet Silverado 1500 LTZ\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet Silverado 1500 LT Trail Boss\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet Silverado 1500 RST\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet Silverado 1500 Custom Trail Boss\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet Silverado 1500 High Country\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet Silverado 1500 LT\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet Silverado 1500 WT\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2022\u003c\/td\u003e\n\u003ctd\u003eChevrolet Silverado 1500 Custom\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\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\u003eChevrolet Tahoe\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\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\u003eGMC Yukon XL\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2024\u003c\/td\u003e\n\u003ctd\u003eGMC Sierra 1500 Elevation\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2024\u003c\/td\u003e\n\u003ctd\u003eGMC Sierra 1500 Denali\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2022\u003c\/td\u003e\n\u003ctd\u003eGMC Sierra 1500 SLT\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2022\u003c\/td\u003e\n\u003ctd\u003eGMC Sierra 1500 SLE\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2021\u003c\/td\u003e\n\u003ctd\u003eGMC Sierra 1500 AT4\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2021\u003c\/td\u003e\n\u003ctd\u003eGMC Sierra 1500 Base\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2022-2024\u003c\/td\u003e\n\u003ctd\u003eGMC Sierra 1500 Pro\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\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\u003eGMC Yukon\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003ctd\u003e2862H420\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\u003e2862H420\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine\u003c\/td\u003e\n\u003ctd\u003e5.3L 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\u003e1-7\/8\" primaries; 3\" collectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupplied Y-pipe\u003c\/td\u003e\n\u003ctd\u003e3\" Performance-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\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\u003eIs this interchangeable with the 6.2 kit?\u003c\/h3\u003e\u003cp\u003eThe engine application and rear outlet differ. This 5.3 kit uses the 2-3\/4\" OEM rear interface.\u003c\/p\u003e\u003ch3\u003eAre the front pipes included?\u003c\/h3\u003e\u003cp\u003eYes. The matching catted Y-pipe is supplied with the headers.\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":"2026-10-08T10:41:00+01:00","handle":"kooks-2019-gm-1500-series-header-connection-kits-660b28c0","updated_at":"2026-10-10T19:10:33+01:00","published_at":"2026-10-09T13:43:53+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, dept:performance-parts, fits:chevrolet-silverado-1500, fits:chevrolet-suburban, fits:chevrolet-tahoe, fits:gmc-sierra-1500, fits:gmc-yukon, fits:gmc-yukon-xl, make:chevrolet, make:gmc, type:header-kit","variants":[{"id":55646892425558,"product_id":11350205661526,"title":"5.3L \/ 1-7\/8\" \/ Performance Cats","price":"4091.08","sku":"2862H420","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"5.3L","option2":"1-7\/8\"","option3":"Performance Cats","created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-10T19:10:33+01:00","taxable":true,"barcode":"842422178604","grams":27669,"image_id":null,"weight":27.669,"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":14512386572630,"product_id":11350205661526,"name":"Engine Size","position":1,"values":["5.3L"]},{"id":14512386605398,"product_id":11350205661526,"name":"Header Size","position":2,"values":["1-7\/8\""]},{"id":14512386638166,"product_id":11350205661526,"name":"Cat Type","position":3,"values":["Performance Cats"]}],"images":[{"id":86449192960342,"product_id":11350205661526,"position":1,"created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-08T10:41:05+01:00","alt":"Kooks 1-7\/8\" Header and Catted Connection Kit. 2019+ GM 1500 Series Truck 5.3L.","width":3416,"height":2683,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/5e8d8a527404da993c9b14fca0e8fd49_0141e599-c7e2-4a63-ad9a-26dadef7f33c.png?v=1791452465","variant_ids":[]},{"id":86449192993110,"product_id":11350205661526,"position":2,"created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-08T10:41:04+01:00","alt":"Kooks 1-7\/8\" Header and Catted Connection Kit. 2019+ GM 1500 Series Truck 5.3L.","width":5008,"height":3336,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/61be6f965719a5cbac8fc14b122c49fa_0ba81a1d-949e-4410-8fa8-85e3d985fb59.jpg?v=1791452464","variant_ids":[]},{"id":86449193025878,"product_id":11350205661526,"position":3,"created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-08T10:41:04+01:00","alt":"Kooks 1-7\/8\" Header and Catted Connection Kit. 2019+ GM 1500 Series Truck 5.3L.","width":1500,"height":1500,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/f005cc8598a9e5197e6da787fed92229_c8ec0c9e-7822-4290-b875-ea23181cfcd0.jpg?v=1791452464","variant_ids":[]},{"id":86449193058646,"product_id":11350205661526,"position":4,"created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-08T10:41:04+01:00","alt":"Kooks 1-7\/8\" Header and Catted Connection Kit. 2019+ GM 1500 Series Truck 5.3L.","width":1500,"height":1500,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/f005cc8598a9e5197e6da787fed92229_cfc67d26-cceb-4819-8f4e-74f6ed977836.jpg?v=1791452464","variant_ids":[]}],"image":{"id":86449192960342,"product_id":11350205661526,"position":1,"created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-08T10:41:05+01:00","alt":"Kooks 1-7\/8\" Header and Catted Connection Kit. 2019+ GM 1500 Series Truck 5.3L.","width":3416,"height":2683,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/5e8d8a527404da993c9b14fca0e8fd49_0141e599-c7e2-4a63-ad9a-26dadef7f33c.png?v=1791452465","variant_ids":[]}}}