ZF 4616.319.019 GEAR for WG65 | OEM Genuine Part

Overview

The ZF 4616.319.019 GEAR is a critical internal component engineered specifically for the WG 65 series transmission. This OEM genuine gear facilitates precise torque transfer and speed regulation within the planetary gear set, directly influencing shift quality and overall driveline efficiency. As a wear-sensitive part, the SKU 4616.319.019 must be replaced with an identical OEM specification to maintain proper gear mesh and load distribution. During installation, this gear interfaces directly with the TRANSMISSION HOUSING, which must be inspected for wear or damage to ensure correct alignment and bearing support.

Symptoms of Failure

When the 4616.319.019 gear begins to fail, operators typically notice one or more of the following distinct symptoms. Recognizing these early can prevent catastrophic transmission damage:

• Audible whining or grinding noise during gear engagement: This often indicates worn gear teeth or pitting on the contact surface, especially under load in the WG65.
• Intermittent gear slipping under heavy torque: A failing gear may lose proper mesh, causing the transmission to momentarily lose power delivery, particularly when climbing or hauling.
• Metallic debris in the transmission fluid or on the magnetic drain plug: Flaking material from the gear surface is a clear sign of advanced wear that requires immediate attention.
• Vibration through the driveline at specific RPM ranges: Uneven tooth wear creates imbalance, transmitting noticeable vibration through the chassis during operation.

Technical Specifications

Compatibility

This gear is a direct-fit component for the ZF WG65 transmission series. Based on its design and tooth geometry, it is also compatible with the following ZF models that share the same planetary gear architecture: WG180, WG200, WG210, and WG250. Always verify the serial number of your transmission before ordering. When replacing this gear, it is standard practice to also replace the HEXAGON SCREW (0636011038) and the HEXAGON SCREW (0636011118) that secure the gear assembly, as these fasteners are torque-to-yield and should not be reused. Additionally, the HEXAGON SCREW (0636016015) used for the output flange must be torqued to factory specifications during reassembly.

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