ZF 4108.103.138 OUTPUT | OEM Genuine Part

Overview

The ZF 4108.103.138 OUTPUT (SKU: 4108.103.138) is a critical OEM genuine component engineered for the output shaft assembly in ZF heavy-duty transmissions. This part transfers rotational force from the transmission’s planetary gear set to the driveline, ensuring smooth power delivery in construction machinery such as wheel loaders, graders, and dump trucks. As a factory-spec output component, it maintains precise axial alignment and torque capacity under extreme loads. The 4108.103.138 output is frequently replaced in tandem with the 4108101161: HOUSING, which encloses the output shaft and protects it from debris ingress. When installing this part, technicians must also inspect the 0501215910: MOTOR for wear, as hydraulic motor output directly influences shaft stress.

Symptoms of Failure

• Oil leaks at the output seal area: A worn 4108.103.138 output shaft surface or damaged seal land allows transmission fluid to escape, leaving puddles under the machine.
• Gear slipping under load: Excessive clearance in the output assembly causes intermittent power loss, especially when climbing grades or digging.
• Vibration or driveline shudder: A fatigued output shaft creates radial runout, felt as shaking through the chassis during acceleration.
• Metallic grinding noises: Worn splines on the output component produce a distinct chatter when engaging the PTO or shifting ranges.

Technical Specifications

Compatibility

This OEM genuine output component is designed for ZF WG-series powershift transmissions commonly used in construction machinery. Based on its shaft dimensions and spline profile, the 4108.103.138 is compatible with the following models:

• ZF WG180 (4-speed, 180 kN load class)
• ZF WG200 (5-speed, 200 kN load class)
• ZF WG210 (heavy-duty variant with reinforced output)
• ZF WG310 (large wheel loader applications)

Always verify the output housing condition; the 0501320268: COVER must be torqued to spec to prevent misalignment. Additionally, the 0735370298: ROLLER BEARING supports the output shaft radially and should be replaced simultaneously to avoid premature wear.

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