{"product_id":"isr-performance-tubular-4-2-1-header-nissan-240sx-ka24de-91-98","title":"ISR Performance Tubular 4-2-1 Header - Nissan 240sx KA24DE 91-98","description":"\u003cp\u003eThe ISR Performance 4-2-1 Tubular Header for the KA24DE 240SX is a solid stainless steel header with an expanded 3\" outlet flange for clean bolt-on to a stock exhaust system. 4-2-1 design steps the four primary runners into two collectors, then into one for better mid-range torque, which is where the KA24DE actually does its work.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It Does\u003c\/h3\u003e\n\u003cp\u003eThe factory KA24DE manifold is a flow restriction. A 4-2-1 header opens up the exhaust path, reduces back-pressure that would otherwise rob the motor of power, and tunes the primary collector geometry for a torque-friendly powerband. Solid stainless steel construction and professional welds mean it'll outlast multiple build cycles. The 3\" outlet flange matches most 3\" aftermarket catbacks for a straightforward install.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eDesigned for the Nissan 240SX 1991-1998 (S13 late and S14) with the factory KA24DE engine. Will not fit KA24E single-cam (1989-1990).\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x 4-2-1 tubular header\u003c\/li\u003e\n\u003cli\u003e1x header-to-head manifold gasket\u003c\/li\u003e\n\u003cli\u003e1x 2-bolt outlet gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e ISR Performance\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e IS-SSHD-240KA\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Tubular header (4-2-1 design)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eVehicle Fitment:\u003c\/strong\u003e Nissan 240SX 1991-1998 (KA24DE only, will not fit KA24E)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Solid stainless steel\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eOutlet Flange:\u003c\/strong\u003e 3\" (bolt-on compatible with stock and aftermarket 3\" exhausts)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eCompanion Gasket:\u003c\/strong\u003e IS-EMG-KA247 (7-layer steel manifold gasket, if replacing later)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eSold:\u003c\/strong\u003e Individually (with manifold and outlet gaskets)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eLegality:\u003c\/strong\u003e Off-road and competition use only\u003c\/p\u003e","brand":"ISR Performance","offers":[{"title":"Default Title","offer_id":45957113086149,"sku":"IS-SSHD-240KA","price":385.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/2718\/9701\/files\/1__77782.1630073061.500.659.jpg?v=1773346722","url":"https:\/\/www.isrcompetition.com\/products\/isr-performance-tubular-4-2-1-header-nissan-240sx-ka24de-91-98","provider":"ISR Competition","version":"1.0","type":"link"}