Hydro Gear Lawn Mower Parts

Hydro Gear
  • Hydro Gear® - .5" x 4.00" Hose
    Hydro Gear®.5" x 4.00" Hose (51401)
    0
    # mpn4729900571
    5" x 4.00" Hose 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
    $7.53
  • Hydro Gear® - .56" x 1.67" Extension Spring
    Hydro Gear®.56" x 1.67" Extension Spring (51890)
    0
    # mpn4729900573
    56" x 1.67" Extension Spring (51890) by Hydro Gear®. Size: .56" x 1.67". 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
    $2.81
  • Hydro Gear® - .63" x 2.05" Extension Spring
    Hydro Gear®.63" x 2.05" Extension Spring (52401)
    0
    # mpn4729900532
    63" x 2.05" Extension Spring (52401) by Hydro Gear®. Size: .63" x 2.05". 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
    $3.33
  • Hydro Gear® - .65" x 2.05" Extension Spring
    Hydro Gear®.65" x 2.05" Extension Spring (51605)
    0
    # mpn4729900443
    65" x 2.05" Extension Spring (51605) by Hydro Gear®. Size: .65" x 2.05". 44 Lbs. 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
    $5.82
  • Hydro Gear® - .752" x 1.571" Sleeve Bushing
    Hydro Gear®.752" x 1.571" Sleeve Bushing (51089)
    0
    # mpn4729900566
    752" x 1.571" Sleeve Bushing 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
    $6.48
  • Hydro Gear® - 0.024" Orifice Check Valve Kit
    Hydro Gear®0.024" Orifice Check Valve Kit (2510062)
    0
    # mpn4729900524
    0.024" Orifice Check Valve 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
    $18.14
  • Hydro Gear® - 0.12" x 0.25" x 0.7" Seal Lip
    Hydro Gear®0.12" x 0.25" x 0.7" Seal Lip (9008000-0126)
    0
    # mpn4757421773
    0.12" x 0.25" x 0.7" Seal Lip (9008000-0126) 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...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $2.43
  • Hydro Gear® - 0.139" x 2.984" 70D O-Ring
    Hydro Gear®0.139" x 2.984" 70D O-Ring (50578)
    0
    # mpn4757421705
    0.139" x 2.984" 70D O-Ring 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
    $1.77
  • Hydro Gear® - 0.17" x 0.47" x 0.14" Ball Bearing
    Hydro Gear®0.17" x 0.47" x 0.14" Ball Bearing (2000032)
    0
    # mpn4757421730
    0.17" x 0.47" x 0.14" Ball Bearing (2000032) 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...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $17.40
  • Hydro Gear® - 0.19 CI Charge Pump Kit
    Hydro Gear®0.19 CI Charge Pump Kit (70924)
    0
    # mpn4757421751
    0.19 CI Charge Pump Kit (70924) 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
    $143.42
  • Hydro Gear® - 0.19 CI/REV STD Charge Pump Kit
    Hydro Gear®0.19 CI/REV STD Charge Pump Kit (71247)
    0
    # mpn4757421756
    0.19 CI/REV STD Charge Pump Kit (71247) 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
    $222.22
  • Hydro Gear® - 0.31" x 0.73" Plated Pin Brake
    Hydro Gear®0.31" x 0.73" Plated Pin Brake (44127)
    0
    # mpn4757421707
    0.31" x 0.73" Plated Pin Brake 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
    $2.07
  • Hydro Gear® - 0.48" x 0.50" Transmission Brake Compression Spring
    Hydro Gear®0.48" x 0.50" Transmission Brake Compression Spring (50919)
    0
    # mpn4757421717
    0.48" x 0.50" Transmission Brake Compression Spring 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...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $1.69
  • Hydro Gear® - 0.51" x 1.10" x 0.03" Flat Washer
    Hydro Gear®0.51" x 1.10" x 0.03" Flat Washer (50132)
    0
    # mpn4757421704
    0.51" x 1.10" x 0.03" Flat Washer 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
    $1.77
  • Hydro Gear® - 0.62" x 1.38" x 0.44" Ball Bearing
    Hydro Gear®0.62" x 1.38" x 0.44" Ball Bearing (44147)
    0
    # mpn4757421733
    0.62" x 1.38" x 0.44" Ball Bearing (44147) 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
    $16.66
  • Hydro Gear® - 0.625" x 0.875" x 0.250" Seal Lip
    Hydro Gear®0.625" x 0.875" x 0.250" Seal Lip (53138)
    0
    # mpn4757421722
    0.625" x 0.875" x 0.250" Seal Lip (53138) 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
    $5.46
  • Hydro Gear® - 0.75" x 1.0" x 1.1" Stepped Bushing
    Hydro Gear®0.75" x 1.0" x 1.1" Stepped Bushing (50137)
    0
    # mpn4729900246
    0.75" x 1.0" x 1.1" Stepped Bushing 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
    $8.85
  • Hydro Gear® - 0.82" x 1.96" Spring
    Hydro Gear®0.82" x 1.96" Spring (51131)
    0
    # mpn4757421719
    0.82" x 1.96" Spring 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
    $2.89
  • Hydro Gear® - 012 O-Ring
    Hydro Gear®012 O-Ring (9004101-0120)
    0
    # mpn4729900378
    012 O-Ring (9004101-0120) by Hydro Gear®. Size: .070" x .364". 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
    $1.75
  • Hydro Gear® - 1"-20 Hex Slotted Nut
    Hydro Gear®1"-20 Hex Slotted Nut (51821)
    0
    # mpn4729900256
    1"-20 Hex Slotted 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
    $13.70
  • Hydro Gear® - 1.003" x 1.571" x 0.625" Bushing
    Hydro Gear®1.003" x 1.571" x 0.625" Bushing (51517)
    0
    # mpn4757421720
    1.003" x 1.571" x 0.625" Bushing 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
    $5.10
  • Hydro Gear® - 1.15" x.39" 1.9cc Tang Gerotor
    Hydro Gear®1.15" x.39" 1.9cc Tang Gerotor (50273)
    0
    # mpn4729900247
    1.15" x.39" 1.9cc Tang Gerotor 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
    $18.44
  • Hydro Gear® - 1.375" Internal Ring Ret
    Hydro Gear®1.375" Internal Ring Ret (2003052)
    0
    # mpn4757421712
    1.375" Internal Ring Ret 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
    $1.69
  • Hydro Gear® - 1.40" x 2.22" Tube Axle
    Hydro Gear®1.40" x 2.22" Tube Axle (53367)
    0
    # mpn4757421721
    1.40" x 2.22" Tube Axle (53367) 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
    $3.25
  • Hydro Gear® - 1.43" Internal Retaining Ring
    Hydro Gear®1.43" Internal Retaining Ring (51316)
    0
    # mpn4757421731
    1.43" Internal Retaining Ring 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® - 1.835" Tube Axle
    Hydro Gear®1.835" Tube Axle (53731)
    0
    # mpn4757421758
    1.835" Tube Axle (53731) 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
    $3.67
  • Hydro Gear® - 1.87" Retaining Ring
    Hydro Gear®1.87" Retaining Ring (50760)
    0
    # mpn4757421723
    1.87" Retaining Ring 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
    $1.84
  • Hydro Gear® - 1/2"-20 Hub Kit
    Hydro Gear®1/2"-20 Hub Kit (72073)
    0
    # mpn4729900414
    1/2"-20 Hub 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
    $106.41
  • Hydro Gear® - 1/4"-20 x .75" Hex Flange Self Tapping Screw
    Hydro Gear®1/4"-20 x .75" Hex Flange Self Tapping Screw (50752)
    0
    # mpn4729900248
    1/4"-20 x .75" Hex Flange Self Tapping 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...
    Superior grade materials for unbeatable safety and comfortExtremely durable and easy to put on and remove
    $1.69
  • Hydro Gear® - 1/4"-20 x 1.125" Hex Washer Screw
    Hydro Gear®1/4"-20 x 1.125" Hex Washer Screw (53246)
    0
    # mpn4729900577
    1/4"-20 x 1.125" Hex Washer 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
    $1.75




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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