{"product_id":"exhaust-header-manifold-for-jeep-wrangler-1987-1990-4-2l-engine","title":"Exhaust Header Manifold for Jeep Wrangler (1987-1990) 4.2L Engine","description":"\u003ch2\u003eUnleash Raw Power: Performance Exhaust Header Manifold for Your 1987-1990 Jeep Wrangler 4.2L Engine\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWho Is This For?\u003c\/strong\u003e Owners of the classic 1987-1990 Utility Vehicle with the venerable 4.2L L6 engine who demand improved exhaust flow, enhanced engine response, and a rugged, durable upgrade. Ideal for enthusiasts looking to restore power, improve efficiency, or customize their off-road legend.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs Your Engine Choked?\u003c\/strong\u003e Is your classic 4.2L L6 engine feeling sluggish, delivering less-than-optimal power and responsiveness? Stock exhaust manifolds can restrict exhaust gas flow, hindering performance and potentially cracking under the stresses of heat cycles and off-road adventures, leading to irritating exhaust leaks and reduced efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Engineering Solution:\u003c\/strong\u003e Elevate your engine's potential with this high-performance exhaust header manifold. Engineered specifically for the 1987-1990 4.2L L6 engine, this manifold features precision mandrel-bent tubing and a direct-bolt-on design, ensuring maximum exhaust flow and a seamless installation. Crafted from high-quality, polished stainless steel, it's built to withstand the elements and rigorous use, providing a robust and long-lasting solution to your performance needs. Experience a noticeable improvement in throttle response and a more aggressive exhaust note.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Comparative Edge\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect bolt-on replacement for hassle-free installation, meaning less time in the garage and more time on the trail.\u003c\/li\u003e\n\u003cli\u003ePremium polished stainless steel construction ensures superior durability and corrosion resistance compared to fragile stock cast iron manifolds.\u003c\/li\u003e\n\u003cli\u003eCNC machined flanges guarantee a precise, leak-free seal, preventing power loss and ensuring optimal performance.\u003c\/li\u003e\n\u003cli\u003eTIG and MIG welded construction provides robust, long-lasting integrity, ready for the toughest conditions.\u003c\/li\u003e\n\u003cli\u003eMandrel-bent tubing optimizes exhaust gas velocity, directly translating to improved horsepower and torque across the RPM range.\u003c\/li\u003e\n\u003cli\u003eIncludes all necessary gaskets for a complete setup right out of the box, saving you time and extra trips to the parts store.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px;\"\u003eFitment\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e1987-1990 Jeep Wrangler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px;\"\u003eEngine\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e4.2L L6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px;\"\u003eInlet Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e1.50\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px;\"\u003eOutlet Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e2.00\" OD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1987 Jeep Wrangler 4.2L L6 Engine\u003c\/li\u003e\n\u003cli\u003e1988 Jeep Wrangler 4.2L L6 Engine\u003c\/li\u003e\n\u003cli\u003e1989 Jeep Wrangler 4.2L L6 Engine\u003c\/li\u003e\n\u003cli\u003e1990 Jeep Wrangler 4.2L L6 Engine\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":47970578071800,"sku":"DS-E3YIDQT6S","price":299.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/s-l1600_f65092d9-2f57-4e01-ba30-2a23a5e69ed4.webp?v=1770743395","url":"https:\/\/performancechiptuning.com\/products\/exhaust-header-manifold-for-jeep-wrangler-1987-1990-4-2l-engine","provider":"Performance Chip Tuning","version":"1.0","type":"link"}