ZF 4646.303.034 OUTPUT FLANGE for WG250 | OEM Genuine Part

Overview

The ZF 4646.303.034 OUTPUT FLANGE is a critical driveline component engineered specifically for the WG 250 series transmissions. This OEM genuine part serves as the primary interface between the transmission output shaft and the driveshaft, transferring rotational torque from the gearbox to the vehicle’s axles. Machined from high-strength alloy steel, the flange ensures precise alignment and vibration-free power delivery under heavy-duty industrial loads. The SKU 4646.303.034 is a direct replacement unit, designed to maintain factory tolerances and prevent premature wear on adjacent assemblies such as the TRANSMISSION HOUSING and the HOUSING.

Symptoms of Failure

• Transmission fluid seepage at the output shaft: A worn output flange often causes oil to weep past the seal, leaving visible drips under the bell housing. This is a common long-tail search query for “ZF WG250 output flange oil leak.”
• Driveline vibration during acceleration: When the flange splines or pilot bore wear, rotational imbalance occurs, leading to noticeable shuddering at highway speeds.
• Clunking noise when shifting gears: Excessive backlash from a damaged flange creates a metallic “clunk” as torque is applied or released, particularly in stop-and-go operations.
• Premature bearing or seal failure: A misaligned flange places lateral stress on the output shaft bearing and the COVER assembly, accelerating component degradation.

Technical Specifications

Compatibility

This output flange is primarily designed for the ZF WG 250 series transmission. Based on spline count and bolt pattern data, it is also compatible with the WG180, WG200, and WG210 models. Always verify the output shaft spline count (typically 24 splines) and pilot diameter before installation. The flange integrates directly with the HEXAGON SCREW fasteners used to secure the companion flange yoke.

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