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Description
The Hydro-Gear 51833 Extension Spring is a genuine OEM tension spring engineered for use in Hydro-Gear hydrostatic transmission systems. This precision-manufactured extension spring provides controlled tension within linkage or control assemblies, ensuring smooth mechanical movement and proper return function during operation.
Built to Hydro-Gear’s strict OEM standards, the 51833 spring delivers the exact tension rate and durability required for reliable performance in demanding residential and commercial mowing environments. Using a genuine Hydro-Gear spring ensures correct fitment, optimal elasticity, and long-term operational stability of the transmission control system.
Key Details:
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Manufacturer: Hydro-Gear
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Part Number: 51833
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Part Type: Extension Spring
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Function: Provides controlled tension in transmission linkage assemblies
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Construction: High-strength spring steel
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Application: Hydrostatic transmission control components
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Installation: Direct OEM replacement
Compatibility:
The Hydro-Gear 51833 Extension Spring is used in select Hydro-Gear hydrostatic transaxles and pump assemblies commonly installed in zero-turn mowers and turf equipment.
Common transmission platforms include:
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EZT (ZT-2200) Series
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ZT-2800 Series
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ZT-3100 Series
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ZT-3400 Series
These Hydro-Gear systems are widely utilized by equipment manufacturers such as:
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Ariens
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Gravely
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Scag
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Husqvarna
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Toro
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Exmark
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Cub Cadet
The genuine Hydro-Gear 51833 extension spring plays a key role in maintaining smooth control response, proper linkage tension, and dependable performance of Hydro-Gear hydrostatic drive systems.

