ZF 4644.330.136 CENTERING DISC for WG201 | OEM Genuine Part

Overview

The ZF 4644.330.136 CENTERING DISC is a precision-engineered component designed for the WG 201 series transmission. This genuine OEM part ensures accurate axial alignment of the rotating assembly within the transmission housing, minimizing vibration and preventing premature wear on adjacent components. The centering disc sits between the torque converter and the main shaft, maintaining concentricity under high-torque loads. For optimal assembly integrity, this disc is often paired with the TRANSMISSION HOUSING (4644101160) and the TRANSMISSION HOUSING (4644301323) to secure the internal geometry. The SKU 4644.330.136 is critical for any rebuild or overhaul of the WG201 gearbox.

Symptoms of Failure

• Transmission gear slipping under load: A worn centering disc allows the shaft to drift, causing incomplete gear engagement and power loss during acceleration.
• Abnormal vibration at specific RPM ranges: Misalignment from a degraded disc creates harmonic vibrations felt through the chassis, particularly between 1500-2500 RPM.
• Oil leaks near the bell housing: Excessive play can distort the seal surface, leading to ATF seepage around the input shaft area.
• Hard shifting or delayed engagement: Loss of precise centering disrupts hydraulic pressure balance, resulting in harsh or delayed gear changes.

Technical Specifications

Compatibility

This centering disc is engineered for the ZF WG 201 series transmission. It is also compatible with the WG180, WG200, and WG211 models that share the same input shaft geometry. The disc works in conjunction with the THREADED BUSH (4644301189) and the SCREW PLUG (4475280043) to secure the assembly. Always verify the spline count and pilot bore diameter before installation.

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