ZF 4646.102.018 INPUT for WG250 | OEM Genuine Part

Overview

The ZF 4646.102.018 INPUT for WG250 is a critical OEM genuine component engineered to manage torque transfer from the engine to the transmission’s planetary gearset. Positioned at the front of the main housing, this input shaft assembly interfaces directly with the torque converter and the TRANSMISSION HOUSING to ensure smooth power delivery under heavy loads. The SKU 4646.102.018 is precision-machined to ZF’s exacting tolerances, making it a direct replacement for worn units in the WG 250 Series. Without this part, the transmission cannot engage properly, leading to driveline inefficiency and potential internal damage.

Symptoms of Failure

• Delayed or harsh engagement – When the input shaft wears, you may notice a pronounced lag or clunk when shifting from neutral to drive, a common long-tail search query for “ZF WG250 input shaft failure symptoms.”
• Transmission fluid leaks at the bell housing – A worn input shaft seal or bearing surface allows ATF to escape, often appearing as drips near the HOUSING joint.
• Vibration during acceleration – Excessive play in the input shaft causes driveline shudder, especially at low RPM, which can be misdiagnosed as a torque converter issue.
• Metallic debris in the oil pan – Flaking or pitting on the shaft surface sheds metal particles, contaminating the hydraulic system and accelerating wear on the COVER and valve body.

Technical Specifications

Compatibility

This input shaft is specifically designed for the ZF WG250 series, but it also fits select models in the WG180, WG200, and WG210 families due to shared spline geometry and bearing journals. Always verify your transmission’s serial number before ordering. The CONNECTING PART (4646323018) is often replaced simultaneously to ensure proper alignment with the pump drive.

Related Components