ZF 4699.804.046 GK25 | OEM Genuine Part

Overview

The ZF 4699.804.046 GK25 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 valve body or clutch housing assembly, ensuring hydraulic pressure integrity and preventing cross-contamination of transmission fluid. Positioned directly between the main housing and the control module, the SKU 4699.804.046 GK25 stabilizes internal components under high torque loads. For optimal assembly integrity, this part is often installed alongside the 4699101043 HOUSING and the 4699301106 HOUSING, which together form the primary structural enclosure for the gear train.

Symptoms of Failure

• Hydraulic pressure loss during gear engagement: A worn 4699.804.046 GK25 can cause internal leakage, leading to delayed or harsh shifting in ZF transmissions.
• Visible oil seepage around the valve body interface: Degraded sealing surfaces result in fluid weeping, often mistaken for a simple gasket failure.
• Intermittent transmission slipping under load: When this part loses dimensional stability, it fails to maintain proper clearance, causing clutch pack slippage in construction equipment.
• Contaminated transmission fluid with metallic debris: Abrasion of the GK25 component introduces particles into the hydraulic circuit, accelerating wear on pumps and solenoids.

Technical Specifications

Compatibility

This genuine ZF part is engineered for use in the following transmission models commonly found in construction machinery: WG180, WG200, WG210, and Ecomat 4HP series. It is specifically designed for the GK25 valve body variant, which controls clutch modulation in wheel loaders and excavators. When replacing this component, always inspect the 4699301015 HOUSING COVER for warping and the 4699301085 COVER for cracks to ensure a complete seal.

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