{"product_id":"exhaust-header-manifold-for-toyota-pickup-4runner-2wd-1990-1995-2-4l-engine","title":"Exhaust Header Manifold for Toyota Pickup \u0026 4Runner 2WD (1990-1995) 2.4L Engine","description":"\u003ch2\u003eHigh-Flow Black Steel Exhaust Header Manifold for 1990-1995 Toyota 4Runner, Pickup\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eReplaces the restrictive cast-iron factory exhaust manifold to optimize exhaust scavenging, lower backpressure, and improve upper-RPM power output on 2.4L 22RE 2WD applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock 22RE Exhaust Bottleneck\u003c\/h3\u003e\n\u003cp\u003eThe factory cast-iron exhaust manifold on the N80\/N90 Pickup and N130 4Runner was engineered for mass production and basic emissions compliance, not performance. Over decades of extreme heat cycling, these OEM cast manifolds are notorious for warping, blowing out gaskets, cracking between runners, and suffering from severe heat soak. Furthermore, the internal casting flash and abrupt geometric transitions create significant exhaust turbulence and backpressure. This inherent restriction chokes the 2.4L engine, notably suffocating top-end horsepower and limiting throttle response when operating at higher engine speeds.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis long-tube spec exhaust header eliminates factory restrictions by utilizing 16-gauge wall steel piping with computerized mandrel-bends. By transitioning from a 1-1\/2\" OD inlet to a 2-1\/4\" OD outlet, the manifold maximizes exhaust gas velocity and promotes efficient cylinder scavenging. The smooth inner walls drastically reduce aerodynamic drag inside the primary tubes, translating directly into enhanced top-end horsepower and torque. Structural integrity is heavily reinforced through precision TIG welding and a robust, CNC-machined 10mm thick header flange that actively resists the thermal warping prevalent in OEM units. Integrated dual O2 sensor flanges ensure proper ECU readings are maintained, while the included metal gaskets guarantee a secure, leak-free seal against the cylinder head under extreme thermal loads.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1990-1995 Toyota 4Runner, Pickup (2WD Only)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e22R-E (2.4L) \/ N80, N90, N130\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e112 hp \/ 142 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1990 Toyota 4Runner 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1991 Toyota 4Runner 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1992 Toyota 4Runner 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1993 Toyota 4Runner 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1994 Toyota 4Runner 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1995 Toyota 4Runner 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1990 Toyota Pickup 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1991 Toyota Pickup 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1992 Toyota Pickup 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1993 Toyota Pickup 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1994 Toyota Pickup 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n  \u003cli\u003e1995 Toyota Pickup 2.4L 22RE (2WD Models Only)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Toyota Durability Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt for the legendary reliability of the 22RE platform, this header ensures your truck maintains dependable hauling capabilities and thermal efficiency while finally breathing out the top-end power it was designed to produce.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48959491637496,"sku":"DS-EI0LV7TRE","price":214.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-header-manifold-for-toyota-pickup-4runner-2wd-1990-1995-2-4l-engine-1.webp?v=1781582405","url":"https:\/\/performancechiptuning.com\/fr\/products\/exhaust-header-manifold-for-toyota-pickup-4runner-2wd-1990-1995-2-4l-engine","provider":"Performance Chip Tuning","version":"1.0","type":"link"}