ZF 4661.102.009 INPUT for WG94 | OEM Genuine Part

Overview

The ZF 4661.102.009 INPUT for WG94 is a critical OEM genuine component designed to transfer rotational power from the engine to the transmission’s planetary gear sets. Positioned at the front of the gearbox assembly, this input shaft interfaces directly with the torque converter and the TRANSMISSION HOUSING to ensure precise alignment and load distribution. As a core element of the WG 94 Series, the SKU 4661.102.009 is engineered to withstand high torque loads while maintaining minimal backlash, making it essential for heavy-duty industrial applications where reliability is non-negotiable.

Symptoms of Failure

When the ZF 4661.102.009 INPUT begins to wear, operators may notice distinct performance issues. Common failure symptoms include:

• Oil leaks around the front seal – Worn splines or shaft surface damage can compromise the seal, leading to fluid loss and potential overheating.
• Gear slipping under load – Excessive play in the input shaft causes intermittent disengagement, particularly during acceleration or uphill operation.
• Unusual vibration or noise – A failing input shaft often produces a rhythmic clunking or whining sound, especially when shifting between forward and reverse.
• Delayed engagement – Hardened wear on the shaft’s bearing journals can slow hydraulic pressure buildup, resulting in sluggish takeoff.

Technical Specifications

Compatibility

This genuine input shaft is specifically engineered for the ZF WG 94 Series transmissions, including models such as the WG180, WG200, and WG240. It also fits select variants of the WG150 and WG300 when used with the appropriate HOUSING II adapter. For proper installation, ensure the CYLINDRICAL PIN is correctly aligned to prevent rotational misalignment. Always verify the TYPE PLATE on your transmission to confirm model-specific fitment before ordering.

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