3EB 02 38730: Komatsu Forklift FILTER AIR Water Pump Heli HJ493 Heli HJ493 providing stable output flow despite fluctuations in pressure and or viscosity Precision engineered with accurate finishing for high accuracy Parts may be designed to be interchangeable for easier maintenance and repairs Constructed with carefully selected materials and heat treatment for long durability Design and Operation: Operates on the "gear within a gear" principle common to internal gear pumps Consists of a rotor gear (larger exterior driven gear) and an idler gear (smaller interior gear) Creating a low pressure zone at the suction port Multiple shipping locations are available for faster delivery1 Inner Diameter: Not specified in the search results for this part number