ZF 0730.008.612 BUSH for WG65 | OEM Genuine Part

Overview

The ZF 0730.008.612 BUSH is a precision-engineered bearing component designed for the WG 65 series of heavy-duty transmissions. This OEM genuine part functions as a sacrificial wear surface within the planetary gearset, reducing friction between rotating shafts and stationary housing elements. The bushing absorbs radial loads and maintains proper gear alignment during high-torque operations. When replacing this component, it is critical to inspect the TRANSMISSION HOUSING for scoring or distortion, as housing damage accelerates bushing wear. The SKU 0730.008.612 is machined from sintered bronze alloy to exact ZF tolerances.

Symptoms of Failure

• Low-frequency grinding noise during acceleration: Worn bushing clearance allows gear teeth to misalign, producing a rhythmic metallic sound under load.
• Transmission fluid contamination with bronze particles: As the bushing surface erodes, microscopic metal flakes appear in the oil filter or sump magnet.
• Delayed engagement when shifting from Neutral to Drive: Excessive radial play causes the clutch pack to drag, resulting in a 2-3 second hesitation.
• Oil weeping from the bell housing inspection cover: Bushing wear increases shaft vibration, which compromises the seal lip of adjacent O-rings.

Technical Specifications

Compatibility

This bushing is a direct-fit component for the ZF WG65 series, including models WG65, WG80, WG120, WG150, WG180, and WG200. It is installed in the output shaft support bore of the transmission rear cover. During installation, always replace the HEXAGON SCREW (M8x20) and HEXAGON SCREW (M10x25) that secure the bearing retainer plate. For the oil pump drive assembly, use the HEXAGON SCREW (M12x30) to ensure proper clamp load on the pump housing.

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