ZF 4657.173.014 COUPLING for WG 190/WG 210 | OEM Genuine Part

Overview

The ZF 4657.173.014 COUPLING is a critical driveline component engineered specifically for the WG 190 and WG 210 transmission series. 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 vibration dampening. Positioned within the bell housing assembly, the coupling absorbs torsional shocks and misalignment during heavy-duty operation. The SKU 4657.173.014 is manufactured to ZF’s original tolerances, guaranteeing a direct fit and long service life without the need for modifications.

Symptoms of Failure

When the ZF 4657.173.014 coupling begins to wear, operators often notice excessive driveline vibration during acceleration, particularly at low RPM ranges. A second common failure symptom is intermittent gear engagement hesitation or a “clunking” noise when shifting between forward and reverse. Third, visible oil seepage around the bell housing mating surface indicates the coupling’s sealing lip has degraded. Finally, reduced torque transfer efficiency may cause the transmission to slip under load, especially in WG 190 and WG 210 units operating in high-torque applications.

Technical Specifications

Compatibility

This coupling is designed for the ZF WG 211 Series and is directly compatible with the following transmission models: WG 180, WG 190, WG 200, and WG 210. It also fits select variants of the WG 211 and WG 220 series where the bell housing interface matches the 210 mm outer diameter. Always verify your transmission’s serial number against the OEM parts catalog before installation.

During replacement, it is recommended to inspect and replace the 4657120005 PRESSURE REGULATOR to maintain proper hydraulic control. Additionally, the 0501211384 VALVE should be checked for wear, as it works in tandem with the coupling to modulate clutch pressure. For secure mounting, the 0630532183 INDENTED RING must be replaced to prevent axial play. Finally, the 4656306145 PISTON should be examined for scoring, as a damaged piston can accelerate coupling wear.

Related Components