ZF 4108.138.023 FAN | OEM Genuine Part

Overview

The ZF 4108.138.023 FAN is an OEM genuine component engineered to regulate thermal management within ZF heavy-duty transmission assemblies. Positioned on the external housing of the gearbox, this fan drives forced air across the transmission cooler and hydraulic system, preventing overheating during prolonged operation in construction machinery. The SKU 4108.138.023 is precision-balanced to reduce vibration and ensure consistent airflow, directly supporting clutch pack longevity and fluid viscosity stability. This part interfaces with the 4108101150 HOUSING to create a sealed airflow chamber, while the 0501211694 MOTOR drives its rotation through a splined coupling.

Symptoms of Failure

• Transmission overheating under load — A worn or cracked fan blade reduces airflow, causing oil temperatures to spike above 120°C during excavation or grading.
• Unusual whining or rattling noises — Imbalanced fan blades or bearing wear in the hub produce audible vibrations that worsen at higher engine RPMs.
• Intermittent cooling fan clutch slip — If the fan fails to engage fully, operators may notice erratic temperature gauge fluctuations and reduced hydraulic pressure.
• Visible blade damage or cracking — Impact from debris or thermal fatigue leads to missing segments, directly reducing cooling efficiency and risking damage to the 0501314793 COVER assembly.

Technical Specifications

Compatibility

This fan is designed for ZF powershift transmissions commonly used in wheel loaders, dozers, and telehandlers. It is a direct fit for the WG180 and WG200 series, as well as the 4WG-200 and 5WG-180 variants. The part also retrofits into certain 6WG-250 models when paired with the correct 0501314799 BUSH adapter. Always verify the hub pilot diameter and bolt pattern against your existing assembly before installation.

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