Free - Twin Disc MG-5091 Troubleshooting Guide Twin Disc MG 5091 Marine Transmission Parts for Sale - Seal Section Loading... 1 Front seal for Twin Disc MG5091, MG5111, MG5114, MG5114A Input shaft seal Price: $ 89.08 Qty: ^ Details In Stock Add to Cart 2 Twin Disc Rear seal for marine gear MG5090 and MG5091 Output shaft seal Price: $ 42.48 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-5091 Troubleshooting Guide