The Four Seasons HVAC Heater Fitting 84775 is a steel heater fitting designed for engine cooling components. It features a center width of 1.625 inches and a center B width of 1.375 inches. This heater fitting has an inlet diameter of 5/8 inch and inlet lengths of 0.5 inches and 12.7 millimeters. It is a direct replacement with interchange part numbers H1942, H3016, H1136, and others for easy installation in various vehicles. Perfect for maintaining proper heating functionality in the vehicle's HVAC system. 1531769,153822,H1942,6601549,25670,H1136,H3016,84775,90423,5733,2351109,2352869,31942,HF1942C