Free - Twin Disc MG-502 Troubleshooting Guide Twin Disc MG502 Marine Transmission Parts - Gasket Set Section Loading... 1 Twin Disc Gasket and seal kit for marine gear MG502, MG502-1 K661P . Price: $ 535.46 Qty: ^ Details In Stock Add to Cart 2 Mechanical Gauges Standard Mechanical Gauges with Alarm Electrical Gauges 12 Volts Electrical Gauges 24 Volts 3 Controls Cables & More... See All Control, Cables & More 4 Marine Water Pumps Detroit Diesel Cummins Caterpillar John Deere See All... 5 Fresh Water Pumps Detroit Diesel Cummins Caterpillar John Deere Parts for Twin Disc® marine transmission MG502, gasket and seal kit for Twin Disc® MG502. Free - Twin Disc MG-502 Troubleshooting Guide