ZF 4646.152.439 COUPLING for WG 250/WG 260/WG 310 | OEM Genuine Part

Overview

The ZF 4646.152.439 COUPLING is a critical torque-transfer component engineered specifically for the WG 250, WG 260, and WG 310 series transmissions. This OEM genuine part serves as the mechanical link between the transmission output shaft and the driveline, ensuring precise rotational alignment and dampening torsional vibrations. Located within the rear housing assembly, the SKU 4646.152.439 works in conjunction with the TRANSMISSION HOUSING to maintain structural integrity under high-load conditions. As a factory-spec coupling, it guarantees seamless power delivery in heavy-duty industrial applications, reducing wear on adjacent drivetrain components.

Symptoms of Failure

• Transmission oil leaks near the output flange: A worn 4646.152.439 coupling can compromise the seal between the HOUSING and the output shaft, leading to visible fluid seepage during operation.
• Abnormal gear slipping under load: When the coupling splines degrade, torque transfer becomes inconsistent, causing intermittent slipping in WG 250 transmissions during acceleration or hill climbs.
• Metallic clunking or vibration at low speeds: Excessive backlash from a fatigued coupling produces audible knocking sounds, particularly when shifting between forward and reverse gears.
• Premature wear on the COVER assembly: A failing coupling can misalign the cover, accelerating damage to the protective housing and requiring earlier replacement of surrounding parts.

Technical Specifications

Compatibility

This coupling is designed for the ZF WG series powershift transmissions, specifically the WG 250, WG 260, and WG 310 models. It also fits select WG 180 and WG 200 variants when used with the appropriate HEXAGON SCREW kit. Always verify spline count and housing bore dimensions before installation. The part integrates directly with the TRANSMISSION HOUSING and requires the HOUSING to be properly torqued to specification. For WG 310 applications, confirm that the COVER is compatible with the coupling’s flange profile.

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