ZF 0730.308.420 SPACER RING for WG200 | OEM Genuine Part

Overview

The ZF 0730.308.420 SPACER RING is a precision-engineered component designed for the WG 200 Series transmission family. This OEM genuine part functions as a critical axial spacer, ensuring correct clearance and alignment between rotating assemblies within the gear train. By maintaining precise positioning of shafts and bearings, the spacer ring prevents metal-on-metal contact and supports optimal load distribution. The SKU 0730.308.420 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit without modification. It is commonly installed alongside the 4460165051 CONSOLE and the 4460368311 CONSOLE to secure the planetary carrier assembly.

Symptoms of Failure

When the ZF 0730.308.420 spacer ring wears or deforms, several distinct failure modes emerge. Watch for these specific symptoms to diagnose a failing spacer ring:

• Transmission oil leaks near the bell housing — A worn spacer ring can allow seal misalignment, causing fluid to escape past the main shaft seal.
• Gear slipping under load — Loss of axial preload leads to insufficient clutch pack engagement, resulting in intermittent slipping during acceleration.
• Abnormal whining or grinding noise — Metal-to-metal contact from incorrect spacing generates a high-pitched whine, especially in lower gears.
• Hard shifting or delayed engagement — Reduced clearance between components causes binding, making shifts feel sluggish or harsh.

Technical Specifications

Compatibility

This spacer ring is engineered for the ZF WG200 series of powershift transmissions. It is directly compatible with the following models:

• ZF WG180
• ZF WG200
• ZF WG210
• ZF WG220

Installation requires proper torque sequencing. Always replace the 0636011429 HEXAGON SCREW and the 0730100365 WASHER when servicing this assembly to maintain clamping force integrity.

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