3/8″ to 3/4″ Water Inlet Fitting for OEM Pressure Washers, Brass Finish by | Jul 22, 20263/8″ to 3/4″ Water Inlet Fitting for OEM Pressure Washers. Revitalize your power washing projects effortlessly with the Water Inlet Fitting. Inlet fitting includes O-ring seals and an inlet screen to keep debris at bay.