ZF 4616.319.020 GEAR for WG65 | OEM Genuine Part

Overview

The ZF 4616.319.020 GEAR is a critical internal component engineered specifically for the WG 65 series transmission. This OEM genuine gear transfers rotational force between shafts within the planetary gear set, ensuring smooth power delivery and load distribution under high-torque conditions. As a precision-machined part, it directly influences shift quality and overall driveline efficiency. The SKU 4616.319.020 is manufactured to ZF’s original tolerances, making it a direct replacement for worn units in heavy-duty commercial applications.

Symptoms of Failure

• Whining or grinding noise during gear engagement: When the 4616.319.020 gear teeth become pitted or chipped, audible metallic sounds occur, especially under load. This is a common long-tail search query for “ZF WG65 gear noise symptoms.”
• Intermittent gear slipping or delayed shifts: Worn gear profiles fail to maintain positive meshing, causing the transmission to momentarily lose torque transfer. Operators often search for “ZF transmission slipping between gears.”
• Metal particles in transmission fluid: As the gear surface degrades, microscopic debris contaminates the oil. This is frequently reported as “metal shavings in ZF WG65 oil pan” during routine maintenance.
• Vibration through the drivetrain: Uneven wear on the 4616.319.020 gear creates rotational imbalance, felt as a low-frequency shudder during acceleration or deceleration.

Technical Specifications

Compatibility

This gear is designed for the ZF WG 65 series, which includes the WG65, WG80, and WG90 models commonly found in municipal trucks, fire apparatus, and off-highway vehicles. It is also compatible with select WG180 and WG200 variants that share the same planetary carrier architecture. Always verify your transmission model and serial number before ordering. For assembly, ensure the TRANSMISSION HOUSING is free of cracks, and use the correct HEXAGON SCREW (M10x30) for the gear retainer plate. Additional fasteners such as the HEXAGON SCREW (M12x35) and HEXAGON SCREW (M8x20) are required for secure mounting of adjacent components.

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