ZF 4616.306.120 GEAR SHIFT HOUSING for WG65 | OEM Genuine Part

Overview

The ZF 4616.306.120 GEAR SHIFT HOUSING is a critical structural component within the WG 65 series transmission. This OEM genuine part serves as the primary enclosure for the shift fork assembly and selector mechanism, ensuring precise gear engagement and reliable hydraulic flow control. Positioned on the upper section of the main transmission casing, the housing interfaces directly with the TRANSMISSION HOUSING to create a sealed environment for internal shift components. The SKU 4616.306.120 is engineered to ZF’s exacting tolerances, providing long-term durability under heavy-duty industrial loads.

Symptoms of Failure

• External oil seepage around shift tower: A cracked or warped gear shift housing often allows transmission fluid to escape, leaving visible wet spots on the casing exterior.
• Intermittent gear engagement difficulty: Worn mounting surfaces or internal bore damage can cause the shift rail to bind, leading to hard shifting or partial engagement under load.
• Metallic rattling from shift area: Loose or broken housing mounting points allow vibration and misalignment, producing audible noise during gear changes.
• Contaminated hydraulic fluid: A compromised housing seal permits debris ingress, accelerating wear on internal valves and requiring premature filter replacement.

Technical Specifications

Compatibility

This gear shift housing is specifically designed for the ZF WG 65 series transmission family. While primarily intended for the WG65 model, the 4616.306.120 also fits select variants of the WG180 and WG200 series where the shift housing geometry matches. Always verify compatibility by cross-referencing your transmission’s serial number with ZF documentation. For secure installation, use the HEXAGON SCREW (0636011038) and HEXAGON SCREW (0636011118) for primary mounting, plus the HEXAGON SCREW (0636016015) for auxiliary bracket attachment.

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