ZF 4616.308.156 GEAR for WG65 | OEM Genuine Part

Overview

The ZF 4616.308.156 GEAR is a precision-machined internal component engineered specifically for the WG 65 Series transmission family. This OEM genuine part functions as a critical torque-transfer element within the planetary gearset, ensuring smooth power delivery from the input shaft to the output assembly. The SKU 4616.308.156 is designed to mesh with adjacent gears under high-load conditions, maintaining exacting tolerances to prevent premature wear. When installed alongside a compatible 4616105413: OUTPUT, this gear contributes to the overall durability and efficiency of the drivetrain.

Symptoms of Failure

• Whining or grinding noise during gear engagement: A worn 4616.308.156 gear often produces a distinct metallic whine under load, especially when accelerating or decelerating. This noise indicates tooth surface degradation or pitting.
• Intermittent gear slipping under heavy torque: As the gear teeth lose their profile, the transmission may momentarily lose power transfer, causing a slipping sensation during uphill climbs or towing operations.
• Metallic debris in transmission fluid: Flakes or fine metal particles found during oil changes are a clear sign that the 4616.308.156 gear is eroding, contaminating the hydraulic system.
• Vibration through the shift lever or chassis: Uneven tooth wear creates rotational imbalance, transmitting noticeable vibrations that worsen at higher RPMs.

Technical Specifications

Compatibility

This gear is a direct fit for the ZF WG 65 Series, which includes models such as the WG65, WG80, WG120, WG150, WG180, and WG200. It is also used in select WG 65 variants found in medium-duty trucks, buses, and off-highway equipment. For proper installation, this gear must be paired with a correctly torqued 0636011038: HEXAGON SCREW and aligned with the 4616203017: OUTPUT FLANGE. The 4616101117: TRANSMISSION HOUSING must be inspected for cracks or warping before reassembly to ensure correct gear mesh.

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