ZF 4616.305.056 GEAR SHIFT FORK for WG65 | OEM Genuine Part

Overview

The ZF 4616.305.056 GEAR SHIFT FORK is a precision-machined actuation component engineered for the WG65 heavy-duty transmission series. This OEM genuine part slides along the shift rail to engage and disengage specific gear sets, directing the selector mechanism to the correct synchronizer hub. The SKU 4616.305.056 is forged from high-strength alloy steel to withstand the repeated axial loads and friction inherent in commercial vehicle gear changes. It mounts directly inside the TRANSMISSION HOUSING, where its fork pads interface with the sliding sleeve of the gear cluster.

Symptoms of Failure

• Hard shifting or gear clash: A worn fork pad profile prevents full sleeve engagement, causing grinding noises when attempting to select a gear.
• Transmission jumping out of gear: Excessive wear on the fork fingers reduces holding force, allowing the drivetrain to disengage under load.
• Metallic debris in transmission oil: Flaking or spalling of the fork contact surface introduces steel particles into the lubricant, often detected during routine drain intervals.
• Vibration in the shift lever: A bent or cracked shift fork transmits irregular movement through the linkage, felt as a shudder in the driver’s hand during acceleration.

Technical Specifications

Compatibility

This shift fork is specifically validated for the ZF WG65 transmission family, which includes the WG65-6, WG65-7, and WG65-8 variants. It is also mechanically compatible with the WG180, WG200, and WG210 series when used in conjunction with the correct shift rail assembly. Always verify the fork pad thickness against your existing part before installation. The fork is secured within the housing using HEXAGON SCREW fasteners (M8 x 25) and additional HEXAGON SCREW bolts (M10 x 30) for the rail clamp. A third HEXAGON SCREW (M12 x 40) is used to secure the fork pivot bracket.

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