ZF 4646.151.415 COUPLING for WG 250/WG 260/WG 310 | OEM Genuine Part

Overview

The ZF 4646.151.415 COUPLING is a critical torque-transfer component engineered specifically for the WG 250, WG 260, and WG 310 transmission series. This OEM genuine part sits between the transmission housing and the output shaft assembly, ensuring precise rotational alignment and dampening torsional vibrations during heavy-duty operation. As a direct-fit replacement for the WG 251 Series, the SKU 4646.151.415 guarantees factory-specified clearance and material integrity, reducing wear on adjacent components such as the TRANSMISSION HOUSING and the HOUSING assembly.

Symptoms of Failure

• Oil leaks near the output flange: A worn 4646.151.415 coupling often compromises the seal interface, leading to visible fluid seepage around the transmission tail housing.
• Gear slipping under load: When the coupling loses its dimensional stability, torque transfer becomes inconsistent, causing intermittent slipping during acceleration or hill climbs.
• Abnormal driveline vibration: Deterioration of the coupling’s damping properties results in noticeable shuddering or humming, especially at highway speeds.
• Metal debris in transmission fluid: Fractured coupling fragments can contaminate the oil, accelerating wear on the COVER and internal planetary gears.

Technical Specifications

Compatibility

This coupling is designed for ZF WG-series powershift transmissions, including the WG 180, WG 200, WG 250, WG 260, and WG 310 models. It is a direct replacement for the WG 251 Series and is frequently paired with the CAP SCREW kit for secure mounting. Always verify your transmission’s serial number before installation to ensure proper fitment.

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