This is an identical replacement part for factory coolant tubes (OEM: A05-22433-000). 2 1/2″ in diameter. One 1/2″ NPT fitting. All components are manufactured in the USA from high-quality 304 Stainless Steel. Made in AMERICA. 100% tig welded in a jig with 304 mandrel bends and machined fittings. No wire welds, cast parts, or miter cut bends. With a plastic tank radiator.