ZF 4661.173.006 COUPLING for WG 90/WG 94 | OEM Genuine Part

Overview

The ZF 4661.173.006 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 transmission output shaft and the driveline, ensuring smooth power delivery under heavy-duty industrial loads. The SKU 4661.173.006 is specifically designed to maintain concentric alignment and dampen torsional vibrations, reducing stress on adjacent assemblies. It mounts directly within the 4661101017: TRANSMISSION HOUSING, where it interfaces with the 4661301048: HOUSING II to create a sealed, lubricated chamber for optimal performance.

Symptoms of Failure

When the ZF 4661.173.006 coupling begins to degrade, operators will notice distinct operational issues. Transmission gear slipping under load is a primary indicator, as worn splines fail to maintain positive engagement. Oil leaks near the output flange occur when the coupling’s sealing surface deteriorates, often mistaken for a failing 0634100633: O-RING. Excessive driveline vibration during acceleration signals that the coupling’s damping properties have been compromised. Metallic grinding noises from the bell housing suggest advanced wear, requiring immediate replacement to prevent damage to the 4661301093: TUBE and associated components.

Technical Specifications

Compatibility

This coupling is engineered for the ZF WG 90 and WG 94 transmission families, commonly found in off-highway trucks, wheel loaders, and agricultural machinery. It is directly compatible with models including WG180, WG200, WG210, and WG240. The part also integrates with the 0631306174: CYLINDRICAL PIN for precise alignment during installation. For applications requiring additional sealing, pair this coupling with the 0750100022: SCREW PLUG and 0636302602: SCREW PLUG to prevent contamination.

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