AN221747: Lower Radiator HoseLower radiator hose: designed specifically for engine auxiliaries, this hose efficiently conveys coolant between the engine and radiator, ensuring optimal cooling performance. With an internal diameter of 50. 8 mm (2 in) on the smaller side and 63. 5 mm (2 1 2 in) on the larger side, and a length of 219. 71 mm (8. 65 in), this hose is perfectly sized for a variety of radiator systems. Made from high quality general rubber.