ZF 4644.306.056 GEAR SHIFT HOUSING for WG180 | OEM Genuine Part

Overview

The ZF 4644.306.056 GEAR SHIFT HOUSING is a critical structural component within the WG180 series transmission. It serves as the primary mounting point and protective enclosure for the shift mechanism, ensuring precise alignment of the shift forks and selector rails. Positioned directly atop the main TRANSMISSION HOUSING, this OEM genuine part channels hydraulic and mechanical forces to enable smooth gear engagement. The SKU 4644.306.056 is engineered to ZF’s exacting tolerances, guaranteeing a sealed interface that prevents contamination and maintains consistent shift quality under heavy-duty cycles.

Symptoms of Failure

• External oil seepage around the shift tower: A cracked or warped shift housing allows transmission fluid to escape, often visible as wet spots on the bell housing or under the vehicle.
• Difficulty engaging or disengaging gears: Worn housing bores cause misalignment of shift rails, leading to grinding, missed shifts, or a “sticky” lever feel.
• Unusual mechanical noise during gear changes: A loose or fractured housing permits excessive movement of internal components, producing a metallic clunk or rattle.
• Intermittent gear slippage under load: When the housing fails to secure the shift fork pivot points, the transmission may jump out of gear during acceleration or deceleration.

Technical Specifications

Compatibility

This genuine ZF shift housing is primarily designed for the WG180 series, but it also fits select variants of the WG200 and WG150 transmissions where the shift tower mounting pattern matches. Always verify the casting number on your existing housing. The part interfaces directly with the DISCONNECTION assembly and the OUTPUT FLANGE via a set of HEXAGON SCREW fasteners. For complete rebuilds, confirm compatibility with your transmission’s serial number range.

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