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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.


VALVE ASSEMBLY - MG507 / MG509

$703.32

DRIVE RING (BOLTS TO FLYWHEEL, 14")

$1,097.46

O-RING

$28.56

O-RING

PART RECOMMENDED WHEN CHANGING REAR SEALS

$33.67

RUBBER BLOCK

$20.17

OUTPUT FLANGE

$5,815.42

CLUTCH PLATE (DRIVING)

$65.71

CLUTCH PLATE (DRIVING)

$97.75

DRIVE SPIDER (INPUT, 14")

$7,962.45

OUTPUT FLANGE

$4,001.44

TOP COVER GASKET

$21.09

CLUTCH PLATE (DRIVEN, STEEL)

$83.97

HUB AND BACK PLATE

$2,608.74

DIPSTICK

$124.87

CLUTCH SPIDER

$4,339.66

BREATHER

$298.10

SELECTOR VALVE GASKET

$9.00

GASKET

$12.09

GASKET

PART RECOMMENDED WHEN CHANGING PUMP

$8.68

GASKET

$8.98

DIPSTICK

$93.72

OVERHAUL PLATE KIT

$3,254.70

BEARING KIT

$3,921.12

BEARING KIT

$3,793.43

GASKET AND SEAL KIT

$2,145.96

GASKET AND SEAL KIT

$2,541.85

SELECTOR VALVE - MG509

$2,754.60

REAR SEAL

$44.17

FRONT SEAL

$92.43

HEAT EXCHANGER

$4,299.63

LATHE CUT RING

PART RECOMMENDED WHEN CHANGING REAR SEALS

$11.15

LATHE CUT RING

PART RECOMMENDED WHEN CHANGING FRONT SEAL

$63.15

OIL PUMP

$2,245.36

REAR SEAL

$99.28

SCREEN ELEMENT FILTER

$243.34

PRESSURE HOSE

$295.76

FILTER ELEMENT - MG507 / MG506

$151.09

DIPSTICK TUBE

$152.95