Aeromotive 5.0 fuel rails 5/8 id For use with Ford 5.0L. Available as fuel rail and mounting hardware only Fuel Rails and ?8 AN Plugs Fuel Rail Kit for ?86??95 5.0 liter Fords ?8 AN high pressure ports?eliminates Teflon ? tape and sealant on pipe thread fittings. 5/8" i.d. through-hole able to flow with 2000 plus HP race applications. Slim-line port plug ?eliminates welded ends. Flow-through design eliminates hydraulic fluctuation. Direct bolt-on mounting. Beautiful type II bright dip red anodized finish for corrosion protection.