{"product_id":"arh-jeep-1998-2006-tj-4-0l-long-system","title":"American Racing Headers Long System HD 6-into-1 Header: Jeep Wrangler TJ 1998-2006 4.0L I6","description":"\u003ch1\u003eAmerican Racing Headers Long System HD 6-into-1 Header\u003c\/h1\u003e\n\u003ch2\u003e1998–2006 Jeep Wrangler TJ 4.0L I6\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart #:\u003c\/strong\u003e 140212\u003c\/p\u003e\n\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe American Racing Headers Long System HD 6-into-1 Header is engineered specifically for the 1998–2006 Jeep Wrangler TJ equipped with the 4.0L inline-six engine. Designed for enthusiasts seeking to maximize power and torque, this heavy-duty header system offers a significant upgrade over factory exhaust manifolds. It is ideal for off-roaders and performance-minded drivers who demand durability and enhanced engine efficiency under the most demanding conditions.\u003c\/p\u003e\n\u003cp\u003eBuilt to outperform and outlast competing headers, this system improves exhaust flow with a rotational firing sequence design that optimizes scavenging and reduces backpressure. Whether tackling rugged trails or upgrading your Jeep’s powertrain, this header delivers reliable performance gains and long-term durability.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cp\u003eThis 6-into-1 header system incorporates advanced design elements and premium materials to ensure superior performance and longevity:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e100% Made in the USA with no outsourcing\u003c\/li\u003e\n  \u003cli\u003eConstructed entirely from high-grade 304 stainless steel for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e3\/8\" thick laser-cut flanges provide a warp-free seal for leak-free operation\u003c\/li\u003e\n  \u003cli\u003eHand-ported TIG welded inlets for precise fit and smooth exhaust flow\u003c\/li\u003e\n  \u003cli\u003eOptimized primary tube routing tailored for the Jeep Wrangler TJ chassis\u003c\/li\u003e\n  \u003cli\u003eMerge collectors equipped with scavenger spikes to enhance exhaust scavenging\u003c\/li\u003e\n  \u003cli\u003eAvailable with severe duty 300 cell catalytic converters; optional upgrade to 400 cell G-Sport catalytic converters (call before ordering)\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty construction designed to resist cracking under extreme conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConstruction \u0026amp; Design\u003c\/h3\u003e\n\u003cp\u003eAmerican Racing Headers utilizes premium 304 stainless steel, known for its excellent strength and corrosion resistance, ensuring this header system withstands the harsh environments typical of off-road use. The 3\/8\" thick laser-cut flanges maintain a perfect seal and prevent warping, a common issue with lesser headers. Each inlet is hand-ported and TIG welded to guarantee smooth transitions and optimal exhaust flow.\u003c\/p\u003e\n\u003cp\u003eThe 6-into-1 design features carefully engineered primary tube routing that matches the Jeep Wrangler TJ’s firing order, enhancing exhaust pulse scavenging for improved torque and horsepower. Merge collectors with scavenger spikes further optimize exhaust gas evacuation, contributing to better engine breathing and efficiency.\u003c\/p\u003e\n\n\u003ch3\u003ePerformance \u0026amp; Sound\u003c\/h3\u003e\n\u003cp\u003eBy replacing restrictive factory manifolds, this header system significantly improves exhaust flow, resulting in increased power and torque across the RPM range. The rotational firing sequence design smooths exhaust pulses, reducing turbulence and backpressure. This translates to a more responsive throttle and enhanced engine performance, especially noticeable during off-road driving or towing.\u003c\/p\u003e\n\u003cp\u003eThe system also delivers a deeper, more aggressive exhaust note that complements the Jeep’s rugged character without excessive drone, providing an engaging driving experience.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp\u003eDesigned as a direct fit for 1998–2006 Jeep Wrangler TJ models with the 4.0L inline-six engine, this header system installs using existing mounting points and hardware. The optimized tube routing ensures clearance with chassis components and factory accessories, minimizing the need for modifications. Professional installation is recommended to ensure proper sealing and alignment.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLong system HD 6-into-1 header assembly\u003c\/li\u003e\n  \u003cli\u003eSevere duty 300 cell catalytic converters (standard) or optional 400 cell G-Sport catalytic converters (upgrade available)\u003c\/li\u003e\n  \u003cli\u003eAll necessary mounting flanges and hardware\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eJeep Wrangler TJ owners seeking increased power and torque\u003c\/li\u003e\n  \u003cli\u003eOff-road enthusiasts requiring durable exhaust components\u003c\/li\u003e\n  \u003cli\u003ePerformance builders upgrading the 4.0L inline-six engine\u003c\/li\u003e\n  \u003cli\u003eDrivers looking for a reliable, long-lasting header system\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEmissions Note\u003c\/h3\u003e\n\u003cp\u003eAll American Racing Headers products are manufactured exclusively for racing purposes. Installation of this header system on any vehicle eliminates legal use on public roads and highways. Use may be subject to fines and\/or criminal liability under the Clean Air Act. Please verify local regulations before purchasing or installing this product.\u003c\/p\u003e","brand":"American Racing Headers","offers":[{"title":"1-5\/8\" x 3\" \/ No Cat","offer_id":48196981817556,"sku":"JPTJ-98158300LSNC","price":1493.89,"currency_code":"USD","in_stock":true},{"title":"1-3\/4\" x 3\" \/ No Cat","offer_id":48196981883092,"sku":"140212","price":1555.14,"currency_code":"USD","in_stock":true},{"title":"1-5\/8\" x 3\" \/ With Cat","offer_id":48196981784788,"sku":"JPTJ-98158300LSWC","price":1648.24,"currency_code":"USD","in_stock":true},{"title":"1-3\/4\" x 3\" \/ With Cat","offer_id":48196981850324,"sku":"140211","price":1709.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/Tj_Jeep_Long_System_Updated.png?v=1782966949","url":"https:\/\/fasthemis.com\/products\/arh-jeep-1998-2006-tj-4-0l-long-system","provider":"FastHemis","version":"1.0","type":"link"}