ZF 4644.305.050 QUILL SHAFT for WG200 | OEM Genuine Part

Overview

The ZF 4644.305.050 QUILL SHAFT is a precision-machined component engineered specifically for the WG 200 Series transmissions. This shaft acts as the central torque transfer interface between the input drive and the planetary gear sets, ensuring smooth power delivery under heavy load conditions. As an OEM genuine part, the SKU 4644.305.050 is manufactured to exact ZF tolerances, guaranteeing a direct fit and long service life. It is often replaced in conjunction with the 4644105424 DISCONNECTION assembly and the 4644303538 OUTPUT FLANGE during a major overhaul.

Symptoms of Failure

When the 4644.305.050 QUILL SHAFT begins to wear, operators will notice distinct performance degradation. Common failure symptoms include:

• Transmission gear slipping under load: Worn splines on the quill shaft cause intermittent engagement, leading to power loss during acceleration.
• Metallic debris in transmission fluid: Flaking or pitting of the shaft surface contaminates the oil, often visible during routine fluid changes.
• Abnormal vibration or whining noise: Bearing surface wear on the shaft creates radial play, producing a distinct low-frequency hum at highway speeds.
• Oil leaks near the bell housing: A damaged shaft seal surface allows fluid to escape, leaving visible drips under the vehicle.

Technical Specifications

Compatibility

This QUILL SHAFT is designed for the ZF WG 200 Series transmission family, including models such as the WG180, WG200, and WG210. It is also compatible with certain ZF Ecomat 4HP variants that share the same shaft architecture. Always verify the 0636021036 HEXAGON SCREW torque specifications and inspect the 4644101224 TRANSMISSION HOUSING for cracks before installation.

Related Components