ZF 4661.172.014 COUPLING for WG 90/WG 94 | OEM Genuine Part

Overview

The ZF 4661.172.014 COUPLING is a critical OEM genuine component engineered for the WG 90 and WG 94 series transmissions. This precision-machined coupling serves as the primary torque transfer interface between the engine output and the transmission input shaft, ensuring seamless power delivery under heavy-duty industrial loads. As a direct replacement part, the SKU 4661.172.014 is designed to maintain the exact factory tolerances required for optimal drivetrain alignment and vibration dampening. It integrates directly with the 4661101033 HOUSING and the 4661301096 HOUSING to form a sealed, rigid assembly that protects internal gears from contamination.

Symptoms of Failure

When the ZF 4661.172.014 COUPLING begins to wear, operators typically notice three distinct failure modes. First, transmission gear slipping under load becomes apparent, particularly during acceleration or when climbing grades, as the coupling loses its ability to maintain positive engagement. Second, excessive driveline vibration at specific RPM ranges indicates that the coupling’s damping properties have degraded, often accompanied by a low-frequency hum. Third, visible oil seepage around the bell housing mating surface occurs when the coupling’s sealing face becomes scored or warped, leading to fluid loss and potential overheating. If you observe any of these symptoms, immediate replacement of the 4661.172.014 is recommended to prevent secondary damage to the 0631306174 CYLINDRICAL PIN and other alignment components.

Technical Specifications

Compatibility

This coupling is specifically validated for the ZF WG 94 Series transmissions, including models WG 90, WG 94, and WG 180. It also retrofits to select WG 200 and WG 250 variants when used with the appropriate 0769123894 TYPE PLATE for identification. The 4661.172.014 is not compatible with older WG 80 series without additional adapter kits. Always verify your transmission’s serial number against the OEM parts catalog to ensure correct fitment.

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