ZF 4642.309.053 OUTPUT FLANGE for WG100 | OEM Genuine Part

Overview

The ZF 4642.309.053 OUTPUT FLANGE is a critical driveline component engineered specifically for the WG 100 Series transmission family. This OEM genuine part serves as the mechanical interface between the transmission output shaft and the propeller shaft, transferring rotational torque from the gearbox to the vehicle’s drivetrain. Precision-machined from high-strength alloy steel, the flange ensures concentric alignment and vibration-free power delivery under heavy-duty operating conditions. The SKU 4642.309.053 is designed to mate directly with the TRANSMISSION HOUSING (4651101007) and the HOUSING (4651301029), forming a sealed assembly that withstands extreme torsional loads.

Symptoms of Failure

• Transmission fluid seepage at the output shaft: A worn or cracked output flange allows oil to bypass the seal, leaving visible drips under the vehicle and reducing lubricant levels.
• Driveline vibration during acceleration: Spline wear or flange distortion causes imbalance, resulting in noticeable shuddering at highway speeds or under load.
• Clunking noise when shifting gears: Excessive backlash between the flange and output shaft creates audible metallic impacts, indicating imminent spline failure.
• Difficulty engaging or disengaging the PTO: Misalignment of the flange can interfere with power take-off operation, leading to intermittent engagement or complete lockout.

Technical Specifications

Compatibility

This output flange is designed for the ZF WG 100 Series transmission family, including models WG100, WG120, WG150, WG180, and WG200. It is also compatible with certain WG 101 and WG 102 variants used in medium-duty trucks, buses, and construction equipment. The flange interfaces directly with the HOUSING (4651301024) assembly and requires proper sealing with the specified O-ring to prevent contamination. Always verify spline count and pilot diameter against your transmission’s service manual before installation.

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