ZF 4646.151.436 COUPLING for WG 250/WG 260/WG 310 | OEM Genuine Part

Overview

The ZF 4646.151.436 COUPLING is a critical torque-transfer component engineered specifically for the WG 250, WG 260, and WG 310 series transmissions. This OEM genuine part sits between the transmission housing and the internal shaft assembly, ensuring precise rotational alignment and dampening torsional vibrations during gear shifts. The SKU 4646.151.436 is manufactured to ZF’s exacting tolerances, providing a direct replacement that restores factory-specified driveline performance. When installed alongside the TRANSMISSION HOUSING (4646101028), this coupling maintains the structural integrity required for heavy-duty industrial applications.

Symptoms of Failure

• Oil leaks near the bell housing: A worn 4646.151.436 coupling often allows transmission fluid to seep past the seal, leaving visible drips or wet spots under the vehicle. This is a common long-tail search query for “ZF WG250 oil leak coupling.”
• Gear slipping under load: When the coupling loses its damping capacity, you may experience sudden RPM surges without corresponding speed increases, particularly in higher gears. This symptom is frequently searched as “ZF transmission slipping when accelerating.”
• Metallic grinding or clunking: A degraded coupling produces audible noise during gear engagement or when shifting from Park to Drive. Technicians often search for “ZF WG260 grinding noise from transmission.”
• Vibration through the driveline: Excessive play in the coupling causes noticeable shuddering at highway speeds, a symptom commonly queried as “ZF WG310 vibration at 50 mph.”

Technical Specifications

Compatibility

This coupling is designed for ZF’s WG series powershift transmissions, specifically the WG 250, WG 260, and WG 310 models. It also fits the WG 180 and WG 200 series when used with the appropriate HOUSING (4646301095) and COVER (4646301087). For secure mounting, always pair this part with the HEXAGON SCREW (0636015304) to achieve the correct clamping force. The coupling is not backward-compatible with older ZF 4HP or 5HP series transmissions.

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