{"product_id":"holy-header-4-1-equal-length-stainless-steel","title":"Holy Header 4-1 Equal Length Stainless Steel","description":"The Killer B Motorsport 4-1 Holy Header is a meticulously engineered exhaust manifold designed to optimize both sound and performance for Subaru models including the 2002-2014 WRX and 2004-2021 STI. Constructed from premium 321 stainless steel, this header is built to withstand the extreme heat generated by turbochargers, offering superior longevity compared to less robust materials.\n\nThe header boasts a \"Holy Header\" design with short-length, equal primaries that contribute to quick turbo spool-up. Its symmetrical primary tube geometry ensures high and consistent pulse velocities, a key factor in maximizing power output throughout the RPM range. The collector is crafted from thick-walled 347 stainless steel, featuring a true high-velocity merge design that minimizes flow disruption and turbulence.\n\nKey features include smooth mandrel bends throughout for unrestricted flow and a cast collector for enhanced durability. This particular model is equipped with a 2-bolt up-pipe option and includes an EGT sensor bung on the number 4 cylinder pipe. Please note that this header may not fit some Forester, Outback, and Legacy models equipped with the OEM oil pan and cooler. Installation hardware is not included.","brand":"Killer B Motorsport","offers":[{"title":"Default Title","offer_id":52686469595448,"sku":"KILHH-2BOLT-EGT","price":1779.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/658279519.webp?v=1784874158","url":"https:\/\/store.motormia.co\/products\/holy-header-4-1-equal-length-stainless-steel","provider":"MOTORMIA","version":"1.0","type":"link"}