{"product":{"id":11350220407126,"title":"Kooks Jeep JK LS-Swap Performance-Catted Y-Pipe | 37103200","body_html":"\u003ch2\u003eComplete the catted exhaust for your LS-swapped Wrangler\u003c\/h2\u003e\u003cp\u003eBring the exhaust together on your LS-swapped JK with a Y-pipe made for the matching Kooks conversion headers and cat-back. The 3\" stainless assembly includes 300-cell Performance cats for a naturally aspirated LS installation.\u003c\/p\u003e\u003cp\u003eSKU: 37103200\u003c\/p\u003e\u003ch2\u003eMatch the complete swap exhaust\u003c\/h2\u003e\u003cp\u003e37103200 uses TORCA Swivel-Seal front joints and requires Kooks headers 37102200 or 37102400. It is designed to connect to the 37104100 LS-swap cat-back, with the conversion built around RPM Extreme or similar swap hardware.\u003c\/p\u003e\u003ch2\u003ePlan the engine mounts and clearance\u003c\/h2\u003e\u003cp\u003eThe installation requires a JKLS-HC-ENG-MOUNT engine-mount plate or similar, with GM Gen 4 hydraulic mounts. A minimum 2-1\/2\" suspension lift is recommended. This page covers the four-door JK; two-door conversions may require fuel-tank relocation and need separate planning.\u003c\/p\u003e\u003ch2\u003eMatching products\u003c\/h2\u003e\u003cp\u003eThe \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-37102400?variant=55646914609494\"\u003eJK LS-swap headers\u003c\/a\u003e are one specified header choice for this four-door LS conversion. The swap-kit, hydraulic-mount and recommended lift conditions apply to the complete installation. The \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-37104100?variant=55646916378966\"\u003eJK LS-swap cat-back\u003c\/a\u003e is the specified rear component for the four-door JK LS conversion, paired with this Y-pipe and the required swap headers.\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\u003e2018\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler JK Unlimited Willys Wheeler\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler JK Unlimited Sport S\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler JK Unlimited Rubicon\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler JK Unlimited Sahara\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler JK Unlimited Sport\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007-2017\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler Unlimited Sahara\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007-2017\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler Unlimited Rubicon\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007-2010\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler Unlimited X\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2010-2017\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler Unlimited Sport\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2010\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler Unlimited Mountain\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler Unlimited 75th Anniversary\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler Unlimited Sport S\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler Unlimited Winter Edition\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017\u003c\/td\u003e\n\u003ctd\u003eJeep Wrangler Unlimited Smoky Mountain\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103200\u003c\/td\u003e\n\u003ctd\u003eFour-door JK LS swap; matching Kooks headers\/cat-back; specified mounts; minimum 2-1\/2\" lift recommended\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\u003e37103200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003e2007-2018 Jeep JK four-door with LS engine swap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e16-gauge 304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePipework \/ front joint\u003c\/td\u003e\n\u003ctd\u003e3\" \/ TORCA Swivel-Seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCats\u003c\/td\u003e\n\u003ctd\u003e300-cell Performance; naturally aspirated only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired exhaust\u003c\/td\u003e\n\u003ctd\u003e37102200 or 37102400 headers; 37104100 cat-back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eRPM Extreme or similar swap kit; JKLS-HC-ENG-MOUNT or similar plate; GM Gen 4 hydraulic mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift recommendation\u003c\/td\u003e\n\u003ctd\u003eMinimum 2-1\/2\" suspension lift recommended\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 fit my standard Wrangler engine?\u003c\/h3\u003e\u003cp\u003eThis Y-pipe is for an LS engine conversion with the specified matching Kooks exhaust components.\u003c\/p\u003e\u003ch3\u003eCan I use these cats on a supercharged LS?\u003c\/h3\u003e\u003cp\u003eThe Performance cats are for naturally aspirated use. Choose the appropriate catalyst arrangement for a boosted conversion.\u003c\/p\u003e\u003ch2\u003eIntended use\u003c\/h2\u003e\u003cp\u003e37103200: 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":"Exhaust Pipes","created_at":"2026-10-08T10:41:55+01:00","handle":"kooks-37103200","updated_at":"2026-10-10T18:28:40+01:00","published_at":"2026-10-09T13:35:23+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, dept:performance-parts, fits:jeep-wrangler, fits:jeep-wrangler-jk, make:jeep, type:exhaust-pipe","variants":[{"id":55646915952982,"product_id":11350220407126,"title":"Default Title","price":"1804.63","sku":"37103200","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-10-08T10:41:55+01:00","updated_at":"2026-10-10T18:28:40+01:00","taxable":true,"barcode":"842422171650","grams":11340,"image_id":null,"weight":11.34,"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":14512404758870,"product_id":11350220407126,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":86449329439062,"product_id":11350220407126,"position":1,"created_at":"2026-10-08T10:41:55+01:00","updated_at":"2026-10-08T10:41:57+01:00","alt":"Kooks 3\" SS Catted Y-Pipe for LS Swap. 2007-2018 Jeep Wrangler JK 4-Door.","width":800,"height":800,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/641aa9c95a3c2371fcead3e6badb9706.jpg?v=1791452517","variant_ids":[]}],"image":{"id":86449329439062,"product_id":11350220407126,"position":1,"created_at":"2026-10-08T10:41:55+01:00","updated_at":"2026-10-08T10:41:57+01:00","alt":"Kooks 3\" SS Catted Y-Pipe for LS Swap. 2007-2018 Jeep Wrangler JK 4-Door.","width":800,"height":800,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/641aa9c95a3c2371fcead3e6badb9706.jpg?v=1791452517","variant_ids":[]}}}