ZF 4616.328.013 PUMP FLANGE for WG65 | OEM Genuine Part

Overview

The ZF 4616.328.013 PUMP FLANGE is a critical OEM genuine component engineered for the WG 65 Series transmission. This precision-machined flange serves as the mounting interface between the hydraulic pump and the transmission housing, ensuring proper alignment and oil flow for clutch actuation and lubrication. As a direct replacement part, SKU 4616.328.013 maintains factory tolerances to prevent fluid loss and maintain system pressure. It integrates directly with the 4616105402: OUTPUT shaft assembly and the 4616101119: TRANSMISSION HOUSING to form a sealed, high-torque driveline.

Symptoms of Failure

When the pump flange wears or cracks, operators often notice these specific failure indicators:

• Hydraulic oil seepage at the pump-to-transmission joint – A common sign of a distorted flange face or degraded sealing surface, leading to gradual fluid loss.
• Erratic gear engagement or delayed shifting – Insufficient pump pressure due to flange misalignment can cause sluggish clutch pack response.
• Vibration or whining noise from the pump area – A loose or warped flange allows the pump to oscillate, generating audible harmonics during operation.
• Visible metal debris in the transmission oil pan – Fretting wear between the flange and housing can shed particles, contaminating the hydraulic circuit.

Technical Specifications

Compatibility

This pump flange is designed primarily for the WG 65 Series transmission family. Based on its bolt pattern and pump interface dimensions, it is also compatible with the following ZF models: WG180, WG200, WG210, and WG250. Always verify the flange thickness and pilot bore diameter against your specific transmission serial number before installation. The flange mounts directly to the 4005303005: OUTPUT FLANGE and is secured using 0636011038: HEXAGON SCREW fasteners.

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