Free - Twin Disc MG-5091 Troubleshooting Guide Twin Disc MG 5091 Marine Transmission Parts for Sale - Coupling Section Loading... 1 Rubber coupling for Twin Disc marine transmission For Flywheel housing SAE # 1 Price: $ 2,470.32 Qty: ^ Pictures In Stock Add to Cart 2 Rubber Block for Twin Disc Marine Gears . Price: $ 17.92 Qty: ^ Details In Stock Add to Cart 3 Allison and Twin Disc Coupling for marine gear . Price: $ 900.00 Qty: ^ Pictures Availability Out of stock 4 Mechanical Gauges Standard Mechanical Gauges with Alarm Electrical Gauges 12 Volts Electrical Gauges 24 Volts 5 Controls Cables & More... See All Control, Cables & More 6 Marine Water Pumps Detroit Diesel Cummins Caterpillar John Deere See All... 7 Fresh Water Pumps Detroit Diesel Cummins Caterpillar John Deere Free - Twin Disc MG-5091 Troubleshooting Guide