ZF 4699.825.215 GP25 | OEM Genuine Part

Overview

The ZF 4699.825.215 GP25 is a precision-engineered OEM genuine gear set designed for heavy-duty construction machinery transmissions. This part functions as a primary reduction gear within the planetary assembly, directly managing torque distribution from the input shaft to the output shaft. The SKU 4699.825.215 is critical for maintaining proper gear mesh alignment and load-bearing capacity in ZF drivetrains. When installed alongside the 4699025086 GP25, this component ensures synchronized power flow through the transmission housing.

Symptoms of Failure

• Transmission whining or grinding noise during gear engagement – Worn teeth on the 4699.825.215 create audible metal-on-metal contact, especially under load in construction machinery.
• Intermittent gear slipping under heavy torque – Degraded gear profiles cause loss of positive engagement, leading to sudden power loss during excavation or grading operations.
• Metallic debris in transmission fluid – Flaking or pitting on the gear surface contaminates the oil, often visible during routine fluid changes.
• Hard shifting or delayed engagement – Excessive backlash from a worn GP25 prevents smooth clutch pack engagement, requiring increased shift effort.

Technical Specifications

Compatibility

This GP25 gear set is engineered for ZF WG180, WG200, and WG210 series transmissions commonly used in wheel loaders, excavators, and telehandlers. It directly interfaces with the 4699101157 HOUSING and the 4699102095 INPUT shaft assembly. For complete driveline restoration, pair it with the 4699103075 OUTPUT shaft to ensure proper end-play and torque capacity. Always verify transmission serial numbers before installation.

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