ZF 4644.303.059 SPEEDOMETER PINION for WG180/WG200 | OEM Genuine Part

Overview

The ZF 4644.303.059 SPEEDOMETER PINION is a critical component engineered for the WG180 and WG200 series transmissions. This genuine OEM part precisely engages with the output shaft to relay rotational speed data to the vehicle’s speedometer system. Mounted within the transmission housing, the pinion ensures accurate speed readings for both operational monitoring and fleet management. The SKU 4644.303.059 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in heavy-duty applications.

Symptoms of Failure

When the ZF 4644.303.059 speedometer pinion wears out, operators may notice several distinct issues. Intermittent or complete loss of speedometer function is the most common symptom, often accompanied by erratic needle fluctuations. Oil seepage around the transmission housing near the pinion bore can occur as the seal degrades. Additionally, whining or grinding noises from the transmission during vehicle operation may indicate gear tooth wear on the pinion. Finally, inaccurate odometer readings can lead to improper maintenance scheduling, a frequent long-tail search query for fleet managers.

Technical Specifications

Compatibility

This speedometer pinion is specifically designed for the ZF WG180 and WG200 series transmissions. It is a direct replacement for units found in WG180, WG200, and closely related variants used in medium-duty trucks, buses, and off-highway equipment. Always verify your transmission model before ordering. The pinion interfaces directly with the 4644101043: TRANSMISSION HOUSING and the 4644301194: TRANSMISSION HOUSING to ensure proper alignment. For accurate identification, the 0730365067: TYPE PLATE should be consulted to confirm the transmission series. The pinion is secured in place using the 0631311009: GROOVED STUD.

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