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Twin Disc MG-509 Marine Transmission Parts

Diesel Parts Direct is an Authorized Twin Disc Dealer and carries a great selection of genuine parts for MG-509 DC (deep case) and MG-509 SC (short case) marine transmissions. We stock most popular products like clutch plates, oil pumps, rubber blocks, and bearing kits and have them ready for immediate shipment.


DRIVE RING (BOLTS TO FLYWHEEL, 14")

$1,005.18

O-RING

$16.47

O-RING

PART RECOMMENDED WHEN CHANGING REAR SEALS

$21.37

RUBBER BLOCK

$12.02

OUTPUT FLANGE

$3,292.79

CLUTCH PLATE (DRIVING)

$55.74

CLUTCH PLATE (DRIVING)

$60.27

DRIVE SPIDER (INPUT, 14")

$5,308.29

OUTPUT FLANGE

$2,575.09

TOP COVER GASKET

$17.39

CLUTCH PLATE (DRIVEN, STEEL)

$52.27

HUB AND BACK PLATE

$2,412.81

DIPSTICK

$102.99

CLUTCH SPIDER

$2,629.19

BREATHER

$265.18

SELECTOR VALVE GASKET

$9.00

GASKET

$11.07

GASKET

PART RECOMMENDED WHEN CHANGING PUMP

$8.26

GASKET

$8.54

DIPSTICK

$82.59

OVERHAUL PLATE KIT

$2,054.58

BEARING KIT

$3,488.13

BEARING KIT

$3,343.01

GASKET AND SEAL KIT

$1,424.52

GASKET AND SEAL KIT

$1,694.58

SELECTOR VALVE - MG509

$2,383.73

REAR SEAL

$44.18

FRONT SEAL

$61.62

HEAT EXCHANGER

$2,889.39

LATHE CUT RING

PART RECOMMENDED WHEN CHANGING REAR SEALS

$11.14

LATHE CUT RING

PART RECOMMENDED WHEN CHANGING FRONT SEAL

$52.58

OIL PUMP

$2,017.39

REAR SEAL

$91.83

SCREEN ELEMENT FILTER

$222.97

PRESSURE HOSE

$182.36

CLUTCH PLATE (STEEL)

$32.06

DIPSTICK TUBE

$132.29