ZF 4657.203.003 OUTPUT FLANGE for WG210 | OEM Genuine Part

Overview

The ZF 4657.203.003 OUTPUT FLANGE is a critical driveline component engineered specifically for the WG210 series transmission. This OEM genuine part serves as the mechanical interface between the transmission output shaft and the driveshaft, transferring rotational torque from the gearbox to the vehicle’s axles. Positioned at the rear of the transmission assembly, the output flange mates directly with the HOUS.FRONT SECT and the HOUSING REAR PART to ensure precise alignment and load distribution. The SKU 4657.203.003 is laser-etched for traceability, guaranteeing a direct replacement without modification.

Symptoms of Failure

• Transmission fluid seepage at the output shaft seal: A worn output flange often damages the seal lip, leading to oil leaks that appear as drips under the bell housing.
• Driveline vibration during acceleration: Spline wear or flange runout causes imbalance, resulting in a rhythmic shudder felt through the chassis at highway speeds.
• Clunking noise when shifting between drive and reverse: Excessive backlash in the flange splines produces a metallic knock as torque loads reverse direction.
• Premature bearing failure in the rear housing: A distorted flange face misaligns the output shaft, accelerating wear on the TRANSMISSION HOUSING bearings.

Technical Specifications

Compatibility

This output flange is primarily designed for the ZF WG210 series, but it also fits select variants of the WG180 and WG200 transmissions due to shared output shaft dimensions. It is commonly used in medium-duty trucks, municipal vehicles, and off-highway equipment. Always verify the spline count and pilot diameter against your existing flange before ordering. For full assembly integrity, pair this flange with the CYLINDRICAL PIN for alignment and the CAP SCREW for secure fastening.

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