ZF 4661.102.002 INPUT for WG94 | OEM Genuine Part

Overview

The ZF 4661.102.002 INPUT for WG94 is a critical torque-transfer component engineered for the WG 94 Series of heavy-duty automatic transmissions. This OEM genuine part, identified by SKU 4661.102.002, serves as the primary input shaft assembly, directly coupling the engine’s flywheel to the transmission’s planetary gearset. It sits at the front of the gearbox, housed within the 4661101004: TRANSMISSION HOUSING, and is responsible for receiving rotational power and converting it into hydraulic and mechanical energy for gear engagement. Precision-machined from high-strength alloy steel, this input shaft ensures minimal backlash and optimal alignment, making it indispensable for maintaining driveline integrity in demanding industrial applications.

Symptoms of Failure

When the ZF 4661.102.002 input shaft begins to wear, operators often notice distinct operational issues. Look for these specific failure symptoms to diagnose problems early:

• Transmission gear slipping under load – A worn input shaft can cause intermittent disengagement of the clutch pack, leading to power loss during acceleration.
• Oil leaks at the front seal area – Degraded splines or bearing surfaces on the input shaft can damage the seal, resulting in visible fluid seepage around the bell housing.
• Abnormal vibration or noise during shifting – Excessive play between the input shaft and the 0631306174: CYLINDRICAL PIN creates a rhythmic clatter, especially when shifting from neutral to drive.
• Delayed engagement or harsh starts – A fatigued input shaft reduces hydraulic pressure response, causing a noticeable lag when selecting forward or reverse gears.

Technical Specifications

Compatibility

This genuine ZF input shaft is specifically designed for the WG 94 Series transmission family, which includes models such as the WG180, WG200, and WG240. It is also compatible with certain variants of the WG150 and WG250 when used with the correct 4661301004: HOUSING adapter. Always verify your transmission’s serial number against the OEM parts catalog before installation. For proper assembly, ensure the 4661301093: TUBE is aligned correctly to avoid binding during rotation.

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