ZF 4646.153.033 COUPLING for WG 250/WG 260/WG 310 | OEM Genuine Part

Overview

The ZF 4646.153.033 COUPLING is a critical driveline component engineered for the WG 250, WG 260, and WG 310 series transmissions. This OEM genuine part serves as the primary torque-transfer interface between the engine output and the transmission input shaft, ensuring smooth power delivery and torsional vibration dampening. Located within the bell housing assembly, the coupling directly interfaces with the TRANSMISSION HOUSING to maintain precise axial alignment. The SKU 4646.153.033 is manufactured to ZF’s original tolerances, guaranteeing a direct fit without modification.

Symptoms of Failure

When the ZF 4646.153.033 coupling begins to degrade, operators typically notice these specific failure modes:

• Torque converter shudder during low-speed engagement – A vibration felt through the chassis when shifting from neutral to drive, often misdiagnosed as a transmission fluid issue.
• Metallic clicking or rattling from the bell housing area – This noise indicates excessive spline wear or elastomeric element fatigue within the coupling.
• Intermittent loss of power transfer under heavy load – The coupling may slip momentarily when climbing grades or towing, causing a temporary RPM flare without corresponding vehicle acceleration.
• Visible oil seepage at the coupling-to-housing interface – Worn sealing surfaces allow transmission fluid to escape, often leaving drips on the HOUSING exterior.

Technical Specifications

Compatibility

This coupling is specifically designed for the ZF WG 250 series and its direct derivatives, including the WG 250, WG 260, and WG 310 models. It is also compatible with earlier WG 180 and WG 200 transmissions when used with the appropriate COVER and HEXAGON SCREW kit. The part does not fit the WG 120 or WG 150 series without adapter modifications. Always verify your transmission model code against the ZF parts catalog before installation.

Related Components