ZF 4644.301.247 THREADED BUSH for WG180/WG200 | OEM Genuine Part

Overview

The ZF 4644.301.247 THREADED BUSH is a precision-machined component engineered for the WG 180 and WG 200 series transmissions. This OEM genuine part functions as a critical interface point within the transmission housing, providing a durable threaded seat for securing ancillary components such as the GROOVED STUD. Designed to withstand high torque loads and thermal cycling, the 4644.301.247 bushing ensures a leak-free seal and maintains the structural integrity of the assembly. It is installed directly into the TRANSMISSION HOUSING and works in concert with the HOUSING to maintain proper alignment of the shift system.

Symptoms of Failure

When the ZF 4644.301.247 threaded bush deteriorates, operators may notice the following specific failure indicators:

• Oil seepage around the housing interface: A worn bushing allows transmission fluid to bypass the seal, often visible as a slow drip near the TYPE PLATE area.
• Loose or vibrating mounting hardware: Stripped threads in the bushing cause fasteners to back out, leading to audible rattling during gear engagement.
• Intermittent gear slippage: A compromised bushing can misalign the shift linkage, resulting in delayed or incomplete gear engagement under load.
• Metal debris in the oil pan: Advanced wear produces fine metallic particles that contaminate the fluid, accelerating damage to the SHIFT SYSTEM.

Technical Specifications

Compatibility

This threaded bush is specifically validated for the ZF WG 180 and WG 200 transmission series. It is a direct replacement for units manufactured between 2008 and 2023. The part is also compatible with select variants of the WG 160 series when used in conjunction with the COVER PLATE and appropriate GASKET kits. Always verify the thread pitch against the existing SCREW PLUG and O-RING dimensions before installation.

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