ZF 0730.301.866 SNAP RING for WG200/WG92 | OEM Genuine Part

Overview

The ZF 0730.301.866 SNAP RING is a precision-engineered retaining component designed for the WG200, WG92, and related heavy-duty transmission series. This OEM genuine part secures internal assemblies—such as gear clusters and bearing packs—within the main shaft housing, preventing axial displacement under high torque loads. As a critical locking element, the 0730.301.866 snap ring ensures that the TRANSMISSION HOUSING maintains structural integrity during operation. Its fatigue-resistant material composition guarantees long service life in commercial vehicle applications.

Symptoms of Failure

• Internal gear slippage under load: A worn or fatigued snap ring allows axial play, causing gear disengagement during acceleration.
• Unusual metallic rattling from the transmission: Loose components due to a failed snap ring produce intermittent knocking sounds, especially in neutral.
• Oil contamination with metal particles: When the snap ring fractures, debris enters the lubrication circuit, accelerating wear on the PERIPHERALS assembly.
• Erratic range shifting: A compromised snap ring affects the RANGE SELECTOR engagement, leading to delayed or missed shifts.

Technical Specifications

Compatibility

This snap ring is engineered for ZF WG-series transmissions, including WG180, WG200, WG92, WG94, and WG98 models. It is also compatible with WG90 variants used in off-highway equipment. The part fits directly into the HOUSING groove of the main shaft assembly. For complete rebuilds, verify that the CYLINDRICAL PIN and O-RING are also replaced to prevent secondary failures.

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