ZF 4657.303.028 BUSH for WG210 | OEM Genuine Part

Overview

The ZF 4657.303.028 BUSH is a precision-engineered wear component designed for the WG210 series transmission. This OEM genuine part functions as a sacrificial bearing surface, reducing friction between rotating shafts and stationary housings within the gearbox assembly. Installed primarily in the clutch pack or planetary gear set area, the 4657.303.028 bushing ensures consistent oil film distribution and maintains proper shaft alignment under high torque loads. As a direct OEM replacement, this part restores original clearance tolerances and prevents metal-on-metal contact that can lead to catastrophic transmission failure.

Symptoms of Failure

• Low hydraulic pressure and delayed engagement: When the 4657.303.028 bushing wears, internal leakage increases, causing sluggish gear shifts and a noticeable lag when moving from neutral to drive.
• Metallic debris in transmission fluid: Worn bushings shed fine bronze or steel particles, which appear as glitter in the oil pan and can clog the SCREEN SHEET (4657301034).
• High-pitched whining or grinding noise: Excessive bushing clearance allows shaft vibration, producing a distinct whine that intensifies with engine RPM, especially in lower gears.
• Oil leaks near the bell housing: A worn bushing can misalign the input shaft, compromising the rear seal and causing fluid to weep from the HOUSING REAR PART (4657201013) interface.

Technical Specifications

Compatibility

This bushing is engineered for the ZF WG210 series, but cross-referencing with similar WG-family transmissions confirms fitment in the WG180, WG200, and WG211 models. It is a direct replacement for the bushing located in the front support bore of the TRANSMISSION HOUSING (4657101041). Always verify the bushing bore condition in the HOUS.FRONT SECT (4657201028) before installation, as scoring may require replacement of that component. The bushing is secured using a CYLINDRICAL PIN (0631306792) to prevent rotation during operation.

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