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Description
51602 – Hydro-Gear Return Control Arm (Genuine OEM Part)
The Hydro-Gear 51602 Return Control Arm (RTN CNTRL ARM) is a genuine OEM external linkage component designed for precise control of hydrostatic transmission systems. This return control arm plays a critical role in returning the transmission control linkage to the neutral position, ensuring smooth directional response and safe equipment operation.
Manufactured to Hydro-Gear’s exact OEM specifications, the 51602 return control arm provides accurate movement, proper alignment, and long-lasting durability under commercial mowing conditions. Using a genuine Hydro-Gear control arm ensures correct geometry and seamless integration with factory-installed hydrostatic drive systems.
Key Details:
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Manufacturer: Hydro-Gear
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Part Number: 51602
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Part Type: Return Control Arm
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Function: Assists in returning hydrostatic control linkage to neutral position
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Application: External transmission linkage component
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Construction: Heavy-duty steel arm with precision mounting points
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Installation: Direct OEM replacement
Compatibility:
The Hydro-Gear 51602 Return Control Arm is used in select Hydro-Gear hydrostatic transaxles commonly installed in zero-turn mowers and commercial turf equipment.
Commonly associated with Hydro-Gear transmission platforms such as:
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EZT (ZT-2200) Series
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ZT-2800 Series
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ZT-3100 Series
These Hydro-Gear systems are widely utilized by equipment manufacturers including:
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Ariens
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Gravely
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Scag
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Husqvarna
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Cub Cadet
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Toro
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Exmark
The genuine Hydro-Gear 51602 return control arm ensures smooth drive control response, accurate neutral positioning, and reliable performance of Hydro-Gear hydrostatic transmission systems.

