ZF 4657.303.011 STUTZRING for WG210 | OEM Genuine Part

Overview

The ZF 4657.303.011 STUTZRING is a precision-engineered support ring designed for the WG210 series of ZF industrial transmissions. This OEM genuine part functions as a critical axial spacer and alignment component within the transmission housing assembly, ensuring correct shaft positioning and load distribution during operation. The SKU 4657.303.011 is manufactured to ZF’s original specifications, guaranteeing exact fitment and material integrity. It sits between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, where it prevents metal-on-metal contact and maintains proper gear mesh clearances. Without this ring, the transmission’s internal geometry shifts, leading to accelerated wear on adjacent components.

Symptoms of Failure

When the 4657.303.011 STUTZRING wears or cracks, operators typically notice these specific failure indicators:

• Oil seepage at housing joints – A worn support ring allows the HOUSING REAR PART to shift slightly, breaking the seal and causing fluid leaks around the mating surfaces.
• Intermittent gear slipping under load – Loss of axial preload from a degraded ring reduces gear engagement depth, leading to power loss during heavy operation.
• Abnormal vibration or whining noise – Misalignment caused by a collapsed ring creates uneven bearing loading, producing audible harmonics in the WG210 series.
• Difficulty engaging forward or reverse gears – The ring’s failure alters the position of the CYLINDRICAL PIN guides, causing shift fork binding.

Technical Specifications

Compatibility

This STUTZRING is specifically engineered for the ZF WG210 transmission series. Based on its design and application, it is also compatible with the following ZF models that share the same housing architecture:

• ZF WG180
• ZF WG200
• ZF WG210 (primary application)
• ZF WG220 (early production variants)

Always verify the ring’s fitment against your transmission’s serial number. The ring works in conjunction with the TRANSMISSION HOUSING and HOUS.FRONT SECT to maintain proper clearances.

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