Free - Twin Disc MG-5111A Troubleshooting Guide Twin Disc MG5111A Marine Transmission Parts - Seal Section Loading... 1 Front seal for Twin Disc marine gear MG5090A and MG5111A . Price: $ 32.71 Qty: ^ Pictures In Stock Add to Cart 2 Seal for Twin Disc marine gears Front seal for MG514 & MG514C Rear seal for MG5111, MG5111A, MG5114, MG5114A Price: $ 71.59 Qty: ^ Details In Stock Add to Cart Go Back Free - Twin Disc MG-5111A Troubleshooting Guide