ZF 4646.152.456 COUPLING for WG 250/WG 260/WG 310 | OEM Genuine Part

Overview

The ZF 4646.152.456 COUPLING is a critical torque-transfer component engineered for the WG 250, WG 260, and WG 310 series transmissions. This OEM genuine part serves as the mechanical link between the engine output and the transmission input shaft, ensuring precise rotational alignment and dampening torsional vibrations. As part of the driveline assembly, this coupling works in concert with the TRANSMISSION HOUSING and the HOUSING to maintain structural integrity under heavy loads. The SKU 4646.152.456 is specifically machined to OEM tolerances, making it a direct replacement for worn units in ZF’s industrial gearbox lineup.

Symptoms of Failure

• Torque fluctuation under load – A worn coupling causes uneven power delivery, often described as “jerking” or “surge” during acceleration, especially in WG 250 applications.
• Metallic grinding noise from the bell housing – When the coupling’s splines or elastomeric elements degrade, you may hear a distinct scraping sound, particularly when shifting between forward and reverse.
• Premature wear on adjacent components – A failing coupling forces the COVER and CONNECTING PART to absorb excess stress, leading to accelerated failure of these parts.
• Visible oil seepage near the input flange – As the coupling loses its seal integrity, transmission fluid may weep from the joint, leaving a telltale residue on the housing exterior.

Technical Specifications

Compatibility

This coupling is designed for the following ZF transmission models: WG 250, WG 260, and WG 310. It also fits select variants of the WG 180 and WG 200 series when used with the appropriate TRANSMISSION HOUSING adapter. Always verify your transmission’s serial number against the OEM parts catalog before installation. For WG 250 series applications, this part replaces all previous revision numbers (4646.152.455 and earlier).

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