ZF 4644.330.230 INPUT FLANGE for WG200/WG210 | OEM Genuine Part

Overview

The ZF 4644.330.230 INPUT FLANGE is a precision-engineered component designed for the WG200 and WG210 series transmissions. This OEM genuine part serves as the critical interface between the transmission input shaft and the driveline, transferring rotational torque from the engine to the gearset. Constructed from high-strength alloy steel, the 4644.330.230 flange ensures a secure, vibration-free connection that maintains alignment under heavy loads. As a direct replacement for worn or damaged units, this SKU guarantees factory-specified tolerances and durability, making it essential for maintaining driveline integrity in commercial and industrial applications.

Symptoms of Failure

• Transmission fluid leaks at the input shaft seal: A worn 4644.330.230 flange often damages the seal surface, causing oil to weep or drip from the bell housing area. This is a common long-tail search query for “ZF WG200 input flange oil leak.”
• Driveline vibration during acceleration: When the flange splines wear or the mounting face distorts, you may feel a rhythmic shudder through the chassis, particularly under load. This symptom is frequently searched as “ZF transmission vibration input flange.”
• Gear engagement difficulty or slipping: A loose or cracked flange can misalign the input shaft, leading to hard shifting or intermittent power loss. Technicians often search for “WG210 slipping gears input flange.”
• Metallic debris in transmission fluid: As the flange wears against the shaft, fine metal particles may contaminate the oil, visible during routine changes. This is a critical indicator for “ZF transmission metal shavings input flange.”

Technical Specifications

Compatibility

This input flange is engineered for the ZF WG200 and WG210 transmission series, commonly found in medium-duty trucks, buses, and off-highway equipment. While primarily designed for these models, the 4644.330.230 may also be compatible with the WG180 series in certain applications, provided the spline count and bolt pattern match. Always verify your transmission model and serial number before installation. For complete assembly integrity, this flange works in conjunction with the 4644101216: TRANSMISSION HOUSING and the 4644301223: TRANSMISSION HOUSING to ensure proper shaft alignment. Additionally, the 0730365067: TYPE PLATE provides critical identification data, while the 0631311009: GROOVED STUD secures the flange to the shaft hub.

Related Components

Frequently Asked Questions

Q: How do I know if the 4644.330.230 input flange is the correct part for my WG200 transmission?
A: Verify your transmission model and serial number against the ZF parts catalog. The flange is designed for WG200 and WG210 series; check the spline count (16 internal splines) and bolt hole pattern (4 holes, 90 mm PCD) to confirm compatibility.

Q: Can I reuse the old O-ring or seal when installing this flange?
A: No. Always replace the 0634306525: O-RING with a new unit to ensure a proper seal and prevent leaks. Reusing old seals can lead to premature failure and fluid loss.

Q: What torque specification should I use for the flange bolts?
A: Consult your ZF service manual for exact values, but typical torque for the grooved stud (0631311009) is 80-100 Nm. Always use a calibrated torque wrench and apply thread locker as recommended.