ZF 4699.827.014 GP25 | OEM Genuine Part

Overview

The ZF 4699.827.014 GP25 is a critical OEM genuine gear component engineered for the high-torque planetary sections of ZF construction machinery transmissions. This part functions as a precision-ground pinion within the gear train, directly influencing power transfer and rotational stability. The SKU 4699.827.014 is specifically designed to interface with the intermediate shaft assembly, ensuring smooth engagement under heavy load conditions. As a genuine ZF part, it guarantees exact metallurgical composition and dimensional tolerances required for prolonged service life in excavators, wheel loaders, and graders.

Symptoms of Failure

When the 4699.827.014 GP25 begins to wear, operators often notice intermittent gear slipping under load, particularly during acceleration or uphill travel. A second common failure sign is metallic whining or grinding noises emanating from the transmission housing, indicating surface fatigue on the gear teeth. Third, contaminated transmission fluid with visible metal particles frequently appears during routine oil changes, signaling advanced degradation. Finally, erratic shift timing or delayed engagement in forward gears can occur as the worn pinion disrupts the hydraulic control sequence.

Technical Specifications

Compatibility

This GP25 gear is primarily compatible with ZF WG180, WG200, and WG211 series transmissions commonly found in construction machinery. It also fits select models of the ZF 4WG-200 and 5WG-300 power shift transmissions. Always verify the existing gear tooth profile and spline count before installation, as variations exist between early and late production runs of these models.

Related Components

During a full rebuild, it is standard practice to replace the 4699027011 GP25 alongside this pinion to maintain matched wear patterns. The 4699101099 HOUSING must be inspected for cracks, while the 4699102099 INPUT shaft and 4699103045 OUTPUT flange should be checked for spline wear. Below is a complete list of ancillary parts commonly ordered together.