ZF 4616.303.046 OUTPUT FLANGE for WG65 | OEM Genuine Part

Overview

The ZF 4616.303.046 OUTPUT FLANGE is a critical driveline component engineered specifically for the WG 65 series transmission family. This OEM genuine part serves as the mechanical interface between the transmission output shaft and the propeller shaft or drive axle, transferring rotational torque from the gearbox to the vehicle’s drivetrain. Constructed from high-strength forged steel, the flange ensures precise alignment and secure coupling under heavy-duty operating conditions. The SKU 4616.303.046 is machined to exact OEM tolerances, guaranteeing a direct bolt-on replacement without modification. When installed, this flange mates directly to the TRANSMISSION HOUSING, forming a sealed assembly that withstands high torsional loads and thermal cycling.

Symptoms of Failure

• Transmission fluid leakage at the output shaft seal: A worn or cracked output flange allows lubricant to seep past the seal, leaving visible drips or puddles under the vehicle. This is a common long-tail search query for “ZF WG65 output flange oil leak.”
• Driveline vibration during acceleration: Excessive play in the flange splines or a distorted mounting face causes imbalance, resulting in shuddering or humming at highway speeds.
• Clunking noise when shifting gears: Loose or fatigued flange bolts—such as the HEXAGON SCREW (0636011038)—can create audible backlash between the flange and output shaft.
• Premature bearing or seal wear: A misaligned flange places lateral stress on the output shaft bearing, accelerating failure of adjacent components like the HEXAGON SCREW (0636011118) and HEXAGON SCREW (0636016015).

Technical Specifications

Compatibility

This output flange is designed for the ZF WG 65 series transmission, which includes models such as the WG65, WG80, WG120, WG150, WG180, and WG200. It is also compatible with select off-highway and marine variants that share the same output shaft spline pattern and bolt configuration. Always verify the spline count and pilot diameter against your specific transmission model before installation. For a complete rebuild, consider pairing this flange with the CYLINDRICAL PIN (0631306085) and O-RING (0634313118) to ensure a leak-free seal.

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