ZF 4646.102.021 INPUT for WG250 | OEM Genuine Part

Overview

The ZF 4646.102.021 INPUT for WG250 is a critical OEM genuine component designed to transfer engine torque directly into the planetary gear set of the ZF WG 250 series transmission. Positioned at the front of the main shaft, this input shaft assembly ensures precise rotational alignment and load distribution during high-torque operations. The part number 4646.102.021 is engineered to match factory tolerances, reducing vibration and extending service life. When installed alongside the 4646101028: TRANSMISSION HOUSING, it forms the primary power entry point for heavy-duty industrial applications.

Symptoms of Failure

• Oil leaks at the front seal area – Worn splines or bearing surfaces on the 4646.102.021 can cause seal misalignment, leading to fluid seepage around the input housing.
• Gear slipping under load – A damaged input shaft fails to maintain positive engagement with the clutch pack, resulting in intermittent power loss during acceleration.
• Abnormal whining or grinding noises – Excessive play in the input bearing race creates metallic contact sounds, especially when shifting from neutral to drive.
• Hard shifting or delayed engagement – Wear on the input splines prevents smooth torque transfer, causing hesitation when selecting forward or reverse gears.

Technical Specifications

Compatibility

This input shaft is specifically engineered for the ZF WG 250 series transmission family. It is also compatible with the following ZF models that share the same input geometry: WG180, WG200, WG210, and WG240. Always verify the spline count and pilot bearing diameter before installation. For complete assembly, pair this part with the 4646301095: HOUSING and the 4646301087: COVER to ensure proper sealing. Secure the unit using the 0636015304: HEXAGON SCREW for torque-critical fastening.

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