Hydro Gear Lawn Mower Parts

Hydro Gear
  • Hydro Gear® - 1/4"-20 x 1.37 mm Torx Screw
    Hydro Gear®1/4"-20 x 1.37 mm Torx Screw (44876)
    0
    # mpn4729900245
    1/4"-20 x 1.37 mm Torx Screw by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $1.67
  • Hydro Gear® - 10 Blade CW Fan
    Hydro Gear®10 Blade CW Fan (51691)
    0
    # mpn4729900255
    10 Blade CW Fan (51691) by Hydro Gear®. Diameter: 7". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $8.93
  • Hydro Gear® - 10 Blade Fan
    Hydro Gear®10 Blade Fan (51230)
    0
    # mpn4729900568
    10 Blade Fan (51230) by Hydro Gear®. Diameter: 7". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $8.24
  • Hydro Gear® - 10 Blade Fan
    Hydro Gear®10 Blade Fan (51362)
    0
    # mpn4729900490
    10 Blade Fan (51362) by Hydro Gear®. Diameter: 6". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $11.94
  • Hydro Gear® - 10 Blade Fan with Insert
    Hydro Gear®10 Blade Fan with Insert (53821)
    0
    # mpn4729900302
    10 Blade Fan with Insert (53821) by Hydro Gear®. Diameter: 7". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $15.92
  • Hydro Gear® - 10 Blade Hydraulic Pump Fan
    Hydro Gear®10 Blade Hydraulic Pump Fan (53811)
    0
    # mpn4729900398
    10 Blade Hydraulic Pump Fan by Hydro Gear®. Diameter: 6". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $8.56
  • Hydro Gear® - 10 Blade Lawn Tractor Transaxle Fan with Insert
    Hydro Gear®10 Blade Lawn Tractor Transaxle Fan with Insert (53822)
    0
    # mpn4729900498
    10 Blade Lawn Tractor Transaxle Fan with Insert (53822) by Hydro Gear®. Diameter: 7". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide....
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $15.92
  • Hydro Gear® - 10.1 oz. Sealant Tube
    Hydro Gear®10.1 oz. Sealant Tube (50928)
    0
    # mpn4729900289
    10.1 oz. Sealant Tube by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product development...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $41.58
  • Hydro Gear® - 10cc Swash Plate
    Hydro Gear®10cc Swash Plate (2003087)
    0
    # mpn4729900346
    10cc Swash Plate by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product development...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $46.72
  • Hydro Gear® - 111 O-Ring
    Hydro Gear®111 O-Ring (51804)
    0
    # mpn4729900296
    111 O-Ring (51804) by Hydro Gear®. Size: .103" x .424". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $1.77
  • Hydro Gear® - 12cc Block Kit
    Hydro Gear®12cc Block Kit (71971)
    0
    # mpn4729900547
    12cc Block Kit by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product development cycle,...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $55.99
  • Hydro Gear® - 134 O-Ring
    Hydro Gear®134 O-Ring (9004101-1340)
    0
    # mpn4729900517
    134 O-Ring (9004101-1340) by Hydro Gear®. Size: .103" x 1.862". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $1.69
  • Hydro Gear® - 137 O-Ring
    Hydro Gear®137 O-Ring (52250)
    0
    # mpn4729900393
    137 O-Ring (52250) by Hydro Gear®. Size: .103" x 2.050". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $1.69
  • Hydro Gear® - 137 Square O-Ring
    Hydro Gear®137 Square O-Ring (55204)
    0
    # mpn4729900401
    137 Square O-Ring by Hydro Gear®. Size: 2.05" x .099". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $0.84
  • Hydro Gear® - 143 O-Ring
    Hydro Gear®143 O-Ring (9004100-1430)
    0
    # mpn4729900340
    143 O-Ring (9004100-1430) by Hydro Gear®. Size: .103" x 2.425". Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $1.69
  • Hydro Gear® - 16cc Cylinder Block Assembly Kit
    Hydro Gear®16cc Cylinder Block Assembly Kit (72882)
    0
    # mpn4729900515
    16cc Cylinder Block Assembly Kit by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $46.16
  • Hydro Gear® - 17T Spline ID Gear
    Hydro Gear®17T Spline ID Gear (50419)
    0
    # mpn4729900439
    17T Spline ID Gear by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product development...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $45.85
  • Hydro Gear® - 2.03" Axle Tube
    Hydro Gear®2.03" Axle Tube (53496)
    0
    # mpn4729900578
    2.03" Axle Tube by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product development cycle,...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $3.25
  • Hydro Gear® - 21 Plastic Thrust Bearing
    Hydro Gear®21 Plastic Thrust Bearing (53341)
    0
    # mpn4729900261
    21 Plastic Thrust Bearing by Hydro Gear®. Size: 42 mm x 68 mm x 16 mm. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $22.87
  • Hydro Gear® - 2500 Housing Gasket
    Hydro Gear®2500 Housing Gasket (50223)
    0
    # mpn4729900288
    2500 Housing Gasket by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product development...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $13.76
  • Hydro Gear® - 3/16" x 3/4" Woodruff Key
    Hydro Gear®3/16" x 3/4" Woodruff Key (51871)
    0
    # mpn4729900492
    3/16" x 3/4" Woodruff Key by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $4.29
  • Hydro Gear® - 3/4"-16 Hex Lock Nut
    Hydro Gear®3/4"-16 Hex Lock Nut (53768)
    0
    # mpn4729900266
    3/4"-16 Hex Lock Nut by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product development...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $5.00
  • Hydro Gear® - 4 Bolt Hub Kit
    Hydro Gear®4 Bolt Hub Kit (71405)
    0
    # mpn4729900588
    4 Bolt Hub Kit (71405) by Hydro Gear®. Bolt Quantity: 4 Pieces. Finish: Natural. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $44.95
  • Hydro Gear® - 4.5" Pulley
    Hydro Gear®4.5" Pulley (51182)
    0
    # mpn4757421770
    4.5" Pulley by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product development cycle,...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $31.37
  • Hydro Gear® - 4.5" Pulley Cupped Disc
    Hydro Gear®4.5" Pulley Cupped Disc (53804)
    0
    # mpn4729900453
    4.5" Pulley Cupped Disc (53804) by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $15.08
  • Hydro Gear® - 5 Bolt Hub Kit
    Hydro Gear®5 Bolt Hub Kit (72102)
    0
    # mpn4729900592
    5 Bolt Hub Kit (72102) by Hydro Gear®. Bolt Quantity: 5 Pieces. Finish: Black. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $82.85
  • Hydro Gear® - 5 Bolt Hub Kit
    Hydro Gear®5 Bolt Hub Kit (71691)
    0
    # mpn4729900543
    5 Bolt Hub Kit (71691) by Hydro Gear®. Bolt Quantity: 5 Pieces. Finish: Natural. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $55.52
  • Hydro Gear® - 5.34" Pulley Cupped Disc
    Hydro Gear®5.34" Pulley Cupped Disc (54435)
    0
    # mpn4729900500
    5.34" Pulley Cupped Disc (54435) by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest product...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $14.29
  • Hydro Gear® - 5/16"-24 x .94" Hex Flange Head Patch Bolt
    Hydro Gear®5/16"-24 x .94" Hex Flange Head Patch Bolt (51064)
    0
    # mpn4729900279
    5/16"-24 x .94" Hex Flange Head Patch Bolt by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $1.69
  • Hydro Gear® - 5/16-18" x 1" Screw with Patch
    Hydro Gear®5/16-18" x 1" Screw with Patch (50870)
    0
    # mpn4757421736
    5/16-18" x 1" Screw with Patch (50870) by Hydro Gear®. Hydro-Gear is a world leader in the design and production of precision drive solutions, serving multiple industries and exporting product worldwide. With the industry's shortest...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $3.12




Founded about thirty years ago, Hydro-Gear is one of the leading manufacturers of drive systems for various kinds of lawn mowers, garden tractors, snow throwers, and other equipment. Its assortment is large enough and includes hydrostatic transmissions and transaxles, gear reduction drives, variable displacement piston pumps and wheel motors, electric drive systems, and numerous replacement parts. All of them are made with high precision and quality in mind and can be found in lots of mowers and other gardening machinery that come from different manufacturers Hydro-Gear collaborates with.

As for riding mowers available on the market, they can be fitted with a manual, automatic, or hydrostatic transmission. Essentially, the last option is also automatic, but instead of traditional belts, it uses fluid to transfer engine power and has some benefits including a smoother ride, longer service life, and fewer requirements for maintenance. A typical Hydro-Gear transmission of this type includes a variable displacement axial piston pump that sends power to a bi-directional piston hydraulic motor. The pump is usually powered by a small gasoline motor via belt drive. In such a setup, the engine can operate in the most effective mode, as the vehicle's speed and direction are controlled with the help of the transmission.

Quite often, the whole transmission assembly is called a transaxle, as, aside from a gearbox, it also contains a differential and drive axles. A zero-turn mower usually has two transaxles, one per each drive wheel. To keep your transaxles in good working condition, you will need to change oil and filter, and you can choose a special Hydro-Gear filter available individually or in the brand's service kits that also include oil and a pump. A vast array of these and other Hydro-Gear parts is available in our online store. Here you will find Hydro-Gear fans, cylinder block kits, bearings, shafts, seals, gaskets, and plenty of other goods to keep your equipment in top shape.

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