ZF 4699.825.132 GP25 | OEM Genuine Part

Overview

The ZF 4699.825.132 GP25 is a critical OEM genuine component engineered for the power transfer assembly within heavy-duty construction machinery transmissions. This part functions as a precision-machined gear set, specifically designed to manage torque distribution and rotational speed regulation between the input shaft and the planetary gear system. As a genuine ZF part, the SKU 4699.825.132 ensures exact metallurgical composition and dimensional tolerances required for long service intervals in excavators, wheel loaders, and graders. It sits directly within the main drive train, interfacing with the HOUSING to maintain proper gear mesh alignment under extreme load conditions.

Symptoms of Failure

• Intermittent gear slipping under load: When the 4699.825.132 GP25 wears, operators may notice sudden loss of power transfer during heavy digging or climbing operations, often accompanied by a high-pitched whine from the transmission housing.
• Metallic debris in transmission fluid: Pitting or spalling on the gear teeth produces fine steel particles visible during routine oil changes, indicating the GP25 set is degrading and contaminating the entire hydraulic circuit.
• Hard shifting or delayed engagement: Worn gear profiles cause incomplete meshing with the INPUT and OUTPUT components, leading to clunky gear changes and increased shift times in cold conditions.
• Vibration at specific RPM ranges: Uneven tooth wear creates harmonic vibrations that resonate through the driveline, particularly noticeable between 1200-1800 RPM during steady-state operation.

Technical Specifications

Compatibility

This GP25 gear set is designed for ZF transmissions commonly deployed in construction machinery. Based on its dimensional profile and spline configuration, the 4699.825.132 is compatible with the following ZF transmission models:

• ZF WG180 – Used in mid-size wheel loaders and telehandlers
• ZF WG200 – Found in heavy excavators and graders
• ZF 4WG-200 – Powers articulated dump trucks and compactors
• ZF 5WG-210 – Integrated into high-torque crawler dozers

For proper installation, this part must be paired with the 4699025066 GP25 companion gear to ensure correct backlash and load distribution across the transmission assembly.

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