ZF 4644.102.239 INPUT for WG200 | OEM Genuine Part

Overview

The ZF 4644.102.239 INPUT for WG200 is a precision-engineered input shaft assembly designed for the WG 200 Series powershift transmissions. This OEM genuine part serves as the primary torque transfer component, connecting the engine flywheel to the transmission’s planetary gear set. Manufactured to ZF’s exacting tolerances, the SKU 4644.102.239 ensures seamless power flow and minimal rotational play within the input housing. It is frequently replaced alongside the TRANSMISSION HOUSING (4644101234) and the TRANSMISSION HOUSING (4644301282) during major overhauls, as these components share critical sealing surfaces.

Symptoms of Failure

When the ZF 4644.102.239 input shaft wears out, operators often notice “WG200 transmission input shaft noise”—a distinct whining or grinding sound during acceleration. Another common failure sign is “ZF transmission oil leaks from bell housing”, caused by a worn input shaft seal surface. You may also experience “gear slipping under load in WG200”, as the splines lose engagement with the clutch pack. Finally, “hard shifting or delayed engagement” can occur when the input shaft bearing clearance exceeds factory limits, affecting hydraulic pressure to the ADAPTER (4475280078).

Technical Specifications

Compatibility

This input shaft is primarily designed for the ZF WG 200 Series transmissions, including models WG180, WG200, and WG210. It also fits select variants of the ZF WG 150 series when used with the correct TYPE PLATE (0730365067) for identification. Always verify the spline count and pilot bearing diameter against your transmission’s serial number. The part is not compatible with older ZF 4WG-65 or 4WG-80 series without a full housing conversion.

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