ZF 4644.102.135 INPUT for WG200 | OEM Genuine Part

Overview

The ZF 4644.102.135 INPUT for WG200 is a critical drivetrain component engineered to transfer rotational force from the torque converter directly into the planetary gearset. Positioned at the front of the transmission housing, this OEM genuine input shaft ensures precise alignment and load distribution during high-torque operations. The SKU 4644.102.135 is machined to exacting ZF tolerances, making it a direct replacement for worn units in heavy-duty applications. When paired with a robust TRANSMISSION HOUSING, this input shaft maintains the structural integrity required for sustained industrial use.

Symptoms of Failure

• Delayed or harsh engagement: A worn 4644.102.135 input shaft causes noticeable lag when shifting from neutral to drive, often accompanied by a clunking noise.
• Transmission fluid leaks near the bell housing: Degraded splines or bearing surfaces allow oil to escape, leaving puddles under the vehicle and indicating a failing input shaft.
• Vibration during acceleration: As the input shaft loses concentricity, you may feel rhythmic shaking through the chassis, especially under load.
• Gear slippage in higher ranges: Insufficient torque transfer from the input shaft leads to intermittent power loss, particularly in WG200 transmissions operating at maximum capacity.

Technical Specifications

Compatibility

This input shaft is primarily designed for the ZF WG200 series transmissions, including models WG180, WG200, and WG210. It also fits select WG150 variants when used with the correct O-RING and SCREW PLUG for sealing. For proper installation, ensure the mating TRANSMISSION HOUSING is free of scoring or cracks. The 4644.102.135 is not backward-compatible with older ZF 4HP series without significant housing modifications.

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