Oil Pumps for Twin Disc ® Marine Transmission - Bombas de Aceite para Twin Disc ® - Oil Pump for Twin Disc ® MG509 (Bomba de Aceite Twin Disc ® MG509) Section 1 Twin Disc Oil pump for marine gear MG509 Oil pump for Twin Disc marine gear MG509 Price: $ 1,039.59 Qty: ^ Pictures In Stock Add to Cart 2 Twin Disc Oil Filter for MG509 Oil filter Price: $ 174.37 Qty: ^ Pictures In Stock Add to Cart 3 Breather for Twin Disc marine transmission MG509, MG514 . Price: $ 181.71 Qty: ^ Details In Stock Add to Cart 4 Twin Disc Gasket for MG509 strainer . Price: $ 13.54 Qty: ^ Details In Stock Add to Cart Go Back