ZF 0730.063.419 RING | OEM Genuine Part

Overview

The ZF 0730.063.419 RING is a precision-engineered OEM genuine component designed for internal sealing and load distribution within heavy-duty ZF transmissions used in construction machinery. This ring sits between the rotating shaft assembly and the stationary housing, ensuring hydraulic pressure integrity and preventing cross-contamination of transmission fluid. The SKU 0730.063.419 is a critical wear item that must be replaced during major transmission overhauls to maintain factory-specified clearances. When installed alongside the 4143101009 HOUSING and 4143301025 HOUSING, this ring forms a sealed chamber essential for clutch pack actuation.

Symptoms of Failure

• Hydraulic pressure loss during gear engagement: A worn 0730.063.419 ring allows fluid to bypass, causing delayed or harsh shifting in WG-series transmissions.
• External oil seepage at housing joints: When the ring flattens or cracks, transmission fluid leaks past the 0634313603 O-RING and housing interface, visible as drips under the bell housing.
• Erratic clutch modulation: Worn rings fail to maintain steady backpressure, leading to clutch slip under load—especially noticeable in excavator travel drives.
• Metallic debris in oil pan: Degraded ring material contaminates the fluid, accelerating wear on the 4475280018 SCREW PLUG sealing surface.

Technical Specifications

Compatibility

This ring is engineered for ZF WG-series powershift transmissions commonly found in wheel loaders, dozers, and graders. It is directly compatible with the following ZF models: WG180, WG200, WG211, and WG310. The 0730.063.419 ring also fits select ErgoPower and Ecolite variants where the clutch housing uses a 63.5 mm shaft seal bore. Always verify housing compatibility by inspecting the 4143101009 HOUSING for wear marks before installation.

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