ZF 4699.803.054 GK20 | OEM Genuine Part

Overview

The ZF 4699.803.054 GK20 is a precision-engineered OEM genuine component designed for heavy-duty construction machinery transmissions. This part functions as a critical sealing and alignment element within the gearbox assembly, ensuring proper oil retention and preventing contamination ingress. The SKU 4699.803.054 is typically positioned near the output shaft housing or intermediate plate, where it maintains structural integrity under high torque loads. It works in conjunction with the 4699101046 HOUSING to create a sealed environment for rotating components, while the 4699301109 HOUSING provides additional support for the clutch pack assembly.

Symptoms of Failure

• Oil seepage around the transmission bell housing: When the 4699.803.054 wears, hydraulic fluid may leak past the sealing surface, leaving visible residue on the casing exterior.
• Intermittent gear engagement hesitation: A worn GK20 can cause pressure loss in the clutch circuit, leading to delayed or rough shifting under load.
• Metallic debris in transmission fluid: Degradation of the part’s bearing surface may shed fine metal particles, detectable during routine oil analysis.
• Vibration at the driveline during acceleration: Loss of precise alignment between the shaft and the 4699301017 BEARING COVER can induce harmonic oscillations.

Technical Specifications

Compatibility

This OEM genuine part is primarily used in ZF WG180, WG200, and WG210 series powershift transmissions found in wheel loaders, graders, and excavators. It also fits select models of the ZF 4WG-200 and 6WG-200 torque converter transmissions. The GK20 interfaces directly with the 4699301085 COVER to form a sealed cavity for the clutch piston. Always verify your transmission serial number against the ZF parts catalog before ordering.

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