ZF 4699.805.016 GK30 | OEM Genuine Part

Overview

The ZF 4699.805.016 GK30 is a precision-engineered OEM genuine part designed for the hydraulic control system within heavy-duty construction machinery transmissions. This component functions as a critical interface between the valve body and the clutch pack, regulating oil flow to ensure smooth gear engagement under high torque loads. The SKU 4699.805.016 is specifically calibrated for ZF’s modular transmission architecture, where it sits adjacent to the 4699101018 HOUSING and the 4699301051 HOUSING to maintain hydraulic pressure integrity. Its hardened steel construction resists wear from continuous cycling in excavators, wheel loaders, and graders.

Symptoms of Failure

• Delayed or harsh shifting — When the GK30 wears, hydraulic pressure drops, causing noticeable lag between gear changes or abrupt engagement that jolts the driveline.
• Transmission overheating — A failing 4699.805.016 can cause internal fluid bypass, leading to elevated oil temperatures and reduced system efficiency.
• Intermittent gear slippage — Operators may experience power loss under load as the part fails to maintain clutch pack pressure, especially in low-range gears.
• External oil seepage — Cracks or seal degradation around the GK30 allow hydraulic fluid to escape, often visible near the 4699301054 HOUSING COVER interface.

Technical Specifications

Compatibility

This genuine ZF GK30 component is engineered for use in the following transmission families commonly found in construction machinery:

• ZF WG180 — 6-speed powershift transmissions for wheel loaders and telehandlers.
• ZF WG200 — Heavy-duty 6-speed units for articulated dump trucks and graders.
• ZF WG211 — High-torque variants used in mining and quarry equipment.
• ZF Ergopower — Select models requiring hydraulic control upgrades.

Always verify the 4699301055 COVER alignment before installation to ensure proper sealing with the GK30 assembly.

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