ZF 4699.817.023 GK40 | OEM Genuine Part

Overview

The ZF 4699.817.023 GK40 is a precision-engineered component designed for heavy-duty construction machinery transmissions. This OEM genuine part plays a critical role in the clutch pack assembly, ensuring smooth torque transfer and reliable gear engagement under extreme loads. The SKU 4699.817.023 is specifically calibrated to maintain hydraulic pressure integrity within the transmission housing, directly influencing shift quality and overall driveline efficiency. When paired with a BASIC GEARBOX (4699100080), this part ensures optimal alignment and power distribution across the transmission system.

Symptoms of Failure

• Erratic shifting under load: A worn 4699.817.023 can cause delayed or harsh gear changes, particularly when operating on inclines or carrying heavy payloads.
• Hydraulic fluid seepage: Degradation of the sealing surfaces leads to visible oil leaks around the transmission bell housing, often accompanied by a burnt smell.
• Loss of torque converter lockup: Operators may notice increased engine RPM without corresponding vehicle speed, indicating internal pressure loss from a failing GK40 component.
• Metallic debris in transmission fluid: Advanced wear produces fine metal particles that contaminate the hydraulic circuit, accelerating damage to adjacent parts like the SHAFT SEAL (0634309122).

Technical Specifications

Compatibility

This GK40 component is engineered for ZF WG180, WG200, and WG210 series transmissions commonly found in wheel loaders, excavators, and telehandlers. It also integrates with select models in the ZF 4WG-200 and 6WG-250 families. For proper installation, always verify clearance using a SHIM RING (0630000091) and replace the SEALING RING (0634801038) simultaneously to prevent premature failure.

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