Reproduction zinc intake manifold heater hose water connection fitting for various 1963-79 Ford and Mercury models with 260 289 and 302 small-block engines. Popular applications include Mustang Falcon Comet and F-Series Truck. This 5/8 threaded elbow fitting attaches the intake manifold inlet to the heater core.Specifications5/8 NPT thread5/8 Hose barb3/8 Opening at manifold endNote: Some aftermarket intake manifolds use a larger thread size for the heater hose fitting. Please check the thread size to insure you are ordering the correctly.