FEATURES?? Wheel Motors are hydraulic systems that deliver high volumetric efficiency for better engine operation and performance. The motor works with highly pressurized hydraulic fluid, The gears, shaft and bearings inside the motor are highly engineered with exacting tolerances for operational efficiency. 90,000-130,000; Turf Tracer HydrSerial No. 70,000-129,000; 36″, 48″ and 52.