ZF 4699.803.060 GK20 | OEM Genuine Part

Overview

The ZF 4699.803.060 GK20 is a critical OEM genuine gear set component engineered for the planetary gear train of heavy-duty ZF transmissions used in construction machinery. This SKU, 4699.803.060, functions as the primary power transfer interface within the GK20 assembly, converting rotational input from the torque converter into controlled output for the driveline. It sits directly between the input shaft and the output hub, managing high torque loads during excavation, grading, and material handling operations. As a genuine ZF part, it ensures precise gear meshing and minimal backlash, which is essential for maintaining hydraulic pump synchronization and vehicle creep control.

Symptoms of Failure

When the 4699.803.060 gear set begins to wear, operators often notice distinct performance degradation. Look for these specific failure indicators:

• Intermittent gear slipping under load: The transmission may momentarily lose drive power when climbing grades or lifting heavy loads, a classic sign of worn gear teeth on the GK20.
• Metallic grinding noise from the transmission housing: A high-pitched whine or grinding sound during deceleration indicates pitting or spalling on the gear flanks.
• Contaminated transmission fluid with metallic particles: Visible silver or bronze debris in the oil filter or drain plug signals accelerated wear of the 4699.803.060 gear set.
• Delayed engagement when shifting from neutral to drive: Hesitation of more than two seconds suggests the gear set is no longer maintaining proper preload.

Technical Specifications

Compatibility

This genuine ZF part is designed for use in the following transmission models commonly found in wheel loaders, excavators, and telehandlers:

• ZF WG180 (all series)
• ZF WG200 (including WG200-3 and WG200-4)
• ZF WG210 (early production models)
• ZF Ergopower 3 (select variants with GK20 planetary)

When replacing the 4699.803.060, it is highly recommended to also inspect and replace the 4699003010: GK20 complete assembly if the housing shows scoring. The 4699101046: HOUSING must be checked for cracks, and the 4699102072: INPUT shaft should be measured for runout. Finally, the 4699103030: OUTPUT flange must be torqued to specification during reassembly to prevent premature wear.

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