ZF 4108.102.064 INPUT | OEM Genuine Part

Overview

The ZF 4108.102.064 INPUT is a critical OEM genuine component designed to manage torque transfer from the engine to the transmission’s planetary gear sets in heavy-duty construction machinery. Positioned at the front of the gearbox assembly, this input shaft directly interfaces with the torque converter and the TRANSMISSION HOUSING to ensure precise rotational alignment. The SKU 4108.102.064 is engineered to withstand extreme axial loads and high-cycle fatigue, making it indispensable for maintaining driveline integrity in excavators, wheel loaders, and graders. Without a properly functioning input shaft, the entire transmission system risks catastrophic misalignment and power loss.

Symptoms of Failure

• Transmission input shaft oil leaks – Worn splines or seal surfaces allow hydraulic fluid to escape near the bell housing, often visible as drips under the vehicle after shutdown.
• Gear slipping under load – A damaged input shaft cannot maintain positive engagement with the clutch pack, causing intermittent power loss during acceleration or uphill operation.
• Abnormal vibration or whining noise – Bearing journals on the 4108.102.064 degrade over time, producing a rhythmic metallic sound that intensifies with engine RPM.
• Difficulty engaging forward or reverse gears – Excessive play in the input shaft prevents the shift mechanism from locking into position, leading to grinding or delayed engagement.

Technical Specifications

Compatibility

This genuine ZF input shaft is primarily used in the WG180 and WG200 series transmissions, which are common in mid-size construction machinery. It also fits select variants of the WG160 and WG210 gearboxes where the input spline count matches. Always verify the spline profile and pilot bearing diameter before installation. For complete assembly, ensure the SCREW PLUG (4475280018) and SCREW PLUG (0636302015) are torqued to spec, and replace the SEALING RING (0501325471) to prevent fluid bypass.

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