{"product_id":"4-1-holy-header-exhaust-manifold","title":"4-1 Holy Header Exhaust Manifold","description":"The Killer B Motorsport 4-1 Holy Header is a performance exhaust manifold engineered to significantly enhance exhaust flow and optimize turbocharger performance. Its equal-length design, constructed from thick-walled 321 stainless steel with a 347 stainless steel cast collector, ensures durability and efficient exhaust scavenging for quicker turbo spool and improved throttle response. The symmetrical primary design and smooth mandrel bends further contribute to high and consistent pulse velocities, maximizing flow potential throughout the RPM range.\n\nThe short, equal-length primaries reduce header volume for rapid spool-up. This header is made in the USA and weighs 17lbs. It is compatible with both OEM EJ25 oil pans and the Killer B Motorsport Performance Aluminum Oil Pan.","brand":"Killer Bee","offers":[{"title":"Default Title","offer_id":52662761914680,"sku":"KILHH4-1","price":1985.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687499920.jpg?v=1784320697","url":"https:\/\/store.motormia.co\/products\/4-1-holy-header-exhaust-manifold","provider":"MOTORMIA","version":"1.0","type":"link"}