ZF 4699.825.214 GP25 | OEM Genuine Part

Overview

The ZF 4699.825.214 GP25 is a genuine OEM gearset assembly engineered for the demanding environment of construction machinery transmissions. This precision component sits within the planetary gear train, where it is responsible for transferring torque and managing gear ratios during heavy-load operations. As a critical element of the driveline, the GP25 assembly ensures smooth power delivery from the engine to the final drive. The SKU 4699.825.214 is factory-matched to ZF’s exacting tolerances, guaranteeing a direct fit and long service life when paired with the correct HOUSING and HOUSING components.

Symptoms of Failure

When the ZF 4699.825.214 GP25 begins to degrade, operators often notice distinct operational issues. Look for these specific failure indicators to diagnose a worn gearset:

• Intermittent gear slipping under load – The transmission may momentarily lose drive power when climbing or pushing heavy material, indicating worn gear teeth or bearing surfaces.
• Metallic grinding or whining noise – A high-pitched whine or grinding sound from the transmission housing, especially during acceleration or deceleration, suggests pitting or chipping on the GP25 gearset.
• Contaminated transmission fluid – Dark, metallic-flecked oil found during routine checks points to internal wear of the GP25 assembly, often accompanied by reduced hydraulic pressure.
• Delayed engagement – A noticeable lag when shifting from neutral to forward or reverse, caused by excessive clearance within the gearset and its mating HOUSING COVER.

Technical Specifications

Compatibility

This genuine GP25 gearset is designed for integration into ZF’s heavy-duty powershift transmission series. It is a direct replacement for units in the WG180, WG200, and WG210 model families, commonly found in wheel loaders, graders, and material handlers. Always verify the serial number of your transmission and inspect the condition of the mating TORX SCREW before installation to ensure proper clamping force and alignment.

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