{"product_id":"kooks-37103300","title":"Kooks Wrangler JK 4-Door LS-Swap GREEN Y-Pipe (2007-2018) | 37103300","description":"\u003ch2\u003eComplete the exhaust for your LS-powered Wrangler\u003c\/h2\u003e\u003cp\u003eBring your four-door JK LS swap together with a Kooks 3\" GREEN-catted Y-pipe. It is designed to join Kooks 37102200 or 37102400 swap headers to the 37104100 cat-back, with TORCA Swivel-Seal inlet joints and mandrel-bent stainless tubing.\u003c\/p\u003e\u003cp\u003eSKU: 37103300\u003c\/p\u003e\u003ch2\u003eA matched exhaust for the conversion\u003c\/h2\u003e\u003cp\u003eThe 16-gauge 304 stainless Y-pipe is designed around an RPM Extreme or similar LS swap kit. Pair it with the \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-37102200?variant=55646914511190\"\u003e37102200 1-3\/4-inch swap headers\u003c\/a\u003e or \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-37102400?variant=55646914609494\"\u003e37102400 1-7\/8-inch swap headers\u003c\/a\u003e. Both header choices require an RPM Extreme JKLS-HC-ENG-MOUNT engine-mount plate or equivalent, together with GM Gen 4-style hydraulic engine mounts. Complete the system with the \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-37104100?variant=55646916378966\"\u003e37104100 LS-swap cat-back\u003c\/a\u003e. These are the specified front and rear components for the conversion.\u003c\/p\u003e\u003ch2\u003ePlan the clearance around your swap\u003c\/h2\u003e\u003cp\u003eA minimum 2-1\/2\" suspension lift is recommended. Engine-swap installations can need additional fitting parts or work depending on the conversion, so discuss your engine, swap kit and suspension with us before ordering. The listed application is the four-door JK.\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 Rubicon\u003c\/td\u003e\n\u003ctd\u003eLS engine conversion\u003c\/td\u003e\n\u003ctd\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension lift recommended\u003c\/td\u003e\n\u003c\/tr\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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 2-1\/2\" suspension 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\u003e37103300\u003c\/td\u003e\n\u003ctd\u003e4-door JK with LS engine swap; specified Kooks headers and cat-back; 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\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\u003e37103300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003e2007-2018 Wrangler JK 4-door with LS engine swap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e3\" mandrel-bent, 16-gauge 304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalysts\u003c\/td\u003e\n\u003ctd\u003eGREEN, 300-cell high-flow specification for 37103300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront joint\u003c\/td\u003e\n\u003ctd\u003eTORCA Swivel-Seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired headers\u003c\/td\u003e\n\u003ctd\u003eKooks 37102200 or 37102400; separate purchase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired rear system\u003c\/td\u003e\n\u003ctd\u003eKooks 37104100 cat-back; separate purchase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwap kit\u003c\/td\u003e\n\u003ctd\u003eDesigned around RPM Extreme or similar LS swap kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuspension\u003c\/td\u003e\n\u003ctd\u003eMinimum 2-1\/2\" suspension lift recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eAdditional parts or fitting work may be needed for the individual swap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeader engine mounts\u003c\/td\u003e\n\u003ctd\u003eRPM Extreme JKLS-HC-ENG-MOUNT plate or equivalent; GM Gen 4-style hydraulic mounts\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 for the standard Wrangler engine?\u003c\/h3\u003e\u003cp\u003eIt is for a four-door JK with an LS engine swap and the specified matching Kooks exhaust parts.\u003c\/p\u003e\u003ch3\u003eIs a body lift the recommendation?\u003c\/h3\u003e\u003cp\u003eThe stated recommendation is a minimum 2-1\/2\" suspension lift.\u003c\/p\u003e\u003ch3\u003eWhich headers and cat-back should I use?\u003c\/h3\u003e\u003cp\u003eUse Kooks 37102200 or 37102400 headers and the 37104100 cat-back. \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/pages\/contact\"\u003eTalk to us about your LS conversion\u003c\/a\u003e if you want help matching the exhaust to your swap kit.\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","brand":"Kooks","offers":[{"title":"Default Title","offer_id":55646916149590,"sku":"37103300","price":2389.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/3560b8acfbe26ae118e78aa063588984.jpg?v=1791452518","url":"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-37103300","provider":"Hoonies Adrenaline","version":"1.0","type":"link"}