ZF 4642.151.494 COUPLING for WG 150 | OEM Genuine Part

Overview

The ZF 4642.151.494 COUPLING is a critical OEM genuine component engineered specifically for the WG 150 Series transmission. This precision-machined coupling serves as the primary torque transfer interface between the engine output shaft and the transmission input assembly, ensuring seamless power delivery in heavy-duty industrial applications. As a direct replacement part, the SKU 4642.151.494 maintains factory tolerances to prevent driveline vibration and premature wear. This coupling works in concert with the 4642101108: TRANSMISSION HOUSING and the 4642301208: TRANSMISSION HOUSING to form a rigid structural assembly that withstands high cyclic loads.

Symptoms of Failure

When the ZF 4642.151.494 coupling deteriorates, operators typically notice these specific failure indicators:

• Torque fluctuation during gear engagement – A slipping sensation or delayed power transfer when shifting under load, often misdiagnosed as clutch wear.
• Metallic rattling from the bell housing area – Loose coupling splines produce a distinct chatter at idle that intensifies with acceleration.
• Visible oil seepage at the transmission input seal – Worn coupling faces allow transmission fluid to migrate past the seal, leaving drips on the housing.
• Increased driveline backlash – Excessive rotational play between the engine and transmission, noticeable as a “clunk” when toggling between forward and reverse.

Technical Specifications

Compatibility

This coupling is primarily designed for the WG 150 Series transmission family. It is also compatible with the WG 180 and WG 200 models when used with the appropriate 4642306254: ADAPTER. The part interfaces directly with the 0730365125: TYPE PLATE for correct identification and requires the 0631311009: GROOVED STUD for secure mounting. Always verify spline count and pilot bore dimensions before installation.

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