ZF 4699.825.277 GP25 | OEM Genuine Part

Overview

The ZF 4699.825.277 GP25 is a critical OEM genuine gearset assembly engineered for heavy-duty construction machinery transmissions. This part functions as a primary power transfer component within the planetary gear train, converting rotational input into controlled output torque. The SKU 4699.825.277 is specifically designed to interface with the clutch pack and shaft assemblies, ensuring precise gear engagement under extreme load conditions. As a genuine ZF component, it meets original manufacturing tolerances for durability in excavators, wheel loaders, and graders operating in demanding environments.

Symptoms of Failure

When the ZF 4699.825.277 GP25 begins to wear, operators often notice intermittent gear slipping during acceleration, particularly under heavy load. Another common failure sign is metallic grinding noises from the transmission housing, indicating gear tooth degradation. You may also experience delayed engagement when shifting from neutral to drive, which can escalate into complete power loss. Finally, contaminated transmission fluid with metallic particles is a definitive indicator that this GP25 gearset requires immediate replacement to prevent cascading damage to adjacent components.

Technical Specifications

Compatibility

This GP25 gearset is primarily compatible with ZF WG180, WG200, and WG250 series transmissions found in construction machinery. It also fits select models of the ZF 4WG-200 and 5WG-250 power shift transmissions. For optimal performance, always pair this part with the 4699025171 GP25 companion gear. The assembly requires precise alignment with the 4699101153 HOUSING to maintain proper gear mesh. Additionally, verify that the 4699102106 INPUT shaft and 4699103123 OUTPUT shaft are within specification to avoid premature wear.

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