ZF 4699.804.130 GK25 | OEM Genuine Part

Overview

The ZF 4699.804.130 GK25 is a critical OEM genuine gearset assembly designed for heavy-duty construction machinery transmissions. This part functions as the primary power transfer component within the planetary gear train, converting engine torque into usable rotational force for the driveline. The SKU 4699.804.130 specifically denotes the GK25 variant, which is engineered for high-load applications in excavators, wheel loaders, and crawler dozers. It sits directly between the input shaft and the output shaft, working in conjunction with the 4699004008: GK25 to manage gear ratios during shifting operations.

Symptoms of Failure

When the ZF 4699.804.130 begins to wear, operators may notice specific performance degradation. Oil leaks around the transmission housing often appear as the first sign, particularly near the gearset seals. Gear slipping under load occurs when the planetary gears lose their precise meshing, causing intermittent power loss during excavation or grading. Whining or grinding noises from the transmission indicate bearing or gear tooth wear within the GK25 assembly. Delayed engagement when shifting from forward to reverse is another common symptom, often linked to internal wear in the 4699102073: INPUT shaft interface.

Technical Specifications

Compatibility

This ZF 4699.804.130 GK25 is compatible with the following ZF transmission models commonly used in construction machinery: WG180, WG200, WG250, and WG300. It also fits select Ecomat 2 and Ecomat 4 series transmissions. The gearset interfaces directly with the 4699101043: HOUSING and the 4699103026: OUTPUT shaft, ensuring proper alignment and torque transfer. Always verify your transmission model number before ordering.

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