Free - Twin Disc MG-507 Troubleshooting Guide MG 507 Twin Disc Marine Transmission Parts - Oil Pump Section Loading... 1 Twin Disc Oil Pump for Marine Gear MG507, MG507-1 & MG507A . Price: $ 754.88 Qty: ^ Pictures In Stock Add to Cart 2 Twin Disc Oil Pump Gasket for MG502, MG506, MG507 (new style) . Price: $ 11.28 Qty: ^ Details In Stock Add to Cart 3 Mechanical & Electric Gauges See Our Gauges Page 4 Controls Cables & More... See All Control, Cables & More 5 Marine Water Pumps See All Marine Water Pumps 6 Fresh Water Pumps See All Fresh Water Pumps Free - Twin Disc MG-507 Troubleshooting Guide