{"product_id":"long-tube-headers-1-5-8-primaries-stainless-steel","title":"Long Tube Headers 1-5\/8\" Primaries Stainless Steel","description":"The Flashark Long Tube Headers are a high-performance exhaust upgrade specifically designed for 1977-1979 Ford Bronco, F100, F150, and F250 4WD trucks equipped with the 351M (5.8L) or 400M (6.6L) V8 engines. These headers are constructed from durable stainless steel with a mirror-polished finish, featuring 1-5\/8 inch primary tubes and 3-inch collectors. They are engineered to optimize exhaust flow, reduce backpressure, and enhance engine scavenging, potentially yielding 15-25 horsepower gains. The design accounts for clearance around the 4WD front driveshaft and suspension components.\n\nCrafted with precision, these headers utilize mandrel-bent tubing for smooth exhaust flow and feature 5\/16-inch machined flanges for a perfect seal, addressing common exhaust manifold leaks and warping issues found in factory cast-iron manifolds. The kit is comprehensive, including premium exhaust gaskets, header bolts, and 3-inch to 2-1\/2-inch reducers, designed for a direct bolt-on to the cylinder heads. While the headers themselves require no modifications, connecting to the existing exhaust piping may involve minor cutting and welding.\n\nIt is critical to note that this specific model is precision-engineered to clear the 4WD chassis components. Fitment on 2WD models is not guaranteed due to differences in engine cradle and steering box clearances. For carbureted engines of this era, no ECU or check engine lights will be affected, though a slight enrichment of the air\/fuel mixture may optimize performance.","brand":"Ford","offers":[{"title":"Default Title","offer_id":52688408609080,"sku":"FLES08376","price":389.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/663174918.webp?v=1784889721","url":"https:\/\/store.motormia.co\/products\/long-tube-headers-1-5-8-primaries-stainless-steel","provider":"MOTORMIA","version":"1.0","type":"link"}