Description 477 cm3/r (29.1 in3/r) Displacement20 GPM Continuous Flow (30 GPM Inter)237 RPM Maximum Speed7,853 in-lbs Continuous Torque (12,145 in-lbs Inter)SAE "A" 4-Hole Magneto Mount1.25" Keyed Shaft #10 ORB PortsReverse Timed Manifold Rotation Genuine Parker TG0475MS031AAAA