ZF 4660.273.021 COUPLING for WG 92/WG 98 | OEM Genuine Part

Overview

The ZF 4660.273.021 COUPLING is a critical driveline component engineered specifically for the WG 92 and WG 98 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 directly within the bell housing assembly, this coupling works in concert with the 4660101017: TRANSMISSION HOUSING to maintain precise alignment and rotational stability. The SKU 4660.273.021 is manufactured to ZF’s exacting tolerances, making it an essential replacement for maintaining factory-specified performance in heavy-duty industrial applications.

Symptoms of Failure

When the ZF 4660.273.021 coupling begins to wear, operators may notice specific drivability issues. Transmission gear slipping under load is a primary indicator, often accompanied by a noticeable shudder during acceleration. Oil leaks near the bell housing can occur as the coupling’s sealing surface degrades, allowing transmission fluid to escape. Abnormal driveline vibration at highway speeds suggests the coupling’s dampening properties have deteriorated. Additionally, difficulty engaging or disengaging gears may point to coupling wear, particularly in WG 92 series transmissions where this part provides critical torsional flexibility.

Technical Specifications

Compatibility

This coupling is designed for the ZF WG 92 and WG 98 transmission families. It is directly compatible with the WG 92 Series (including WG92, WG92-1, WG92-2) and the WG 98 Series (including WG98, WG98-1). The part also fits select WG 180 and WG 200 variants when used with the appropriate 4660301054: HOUSING II adapter. For proper installation, ensure the 0631306174: CYLINDRICAL PIN is correctly aligned, and verify the transmission model against the 0769123894: TYPE PLATE for exact fitment confirmation.

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