ZF 0630.004.064 SHIM RING for WG65 | OEM Genuine Part

Overview

The ZF 0630.004.064 SHIM RING is a precision-engineered spacer component designed for the WG 65 Series transmission family. This OEM genuine part plays a critical role in establishing the correct axial clearance between rotating assemblies and stationary housings within the gearbox. By maintaining precise end-play tolerances, the shim ring prevents unwanted axial movement of shafts and gear sets, which directly impacts shift quality and torque transfer efficiency. The SKU 0630.004.064 is manufactured to ZF’s original specifications, ensuring a perfect fit when installed alongside the 4616101059 TRANSMISSION HOUSING and secured with the 0636011038 HEXAGON SCREW.

Symptoms of Failure

• Excessive axial play or end float in the output shaft — When the shim ring wears or deforms, the transmission develops noticeable looseness, leading to imprecise gear engagement and driveline vibration.
• Low-frequency humming or rumbling from the gearbox housing — A worn shim ring allows gear faces to contact housing walls, generating a distinct metallic noise that intensifies under load.
• Intermittent gear slipping under heavy torque — Loss of correct preload causes clutch packs to misalign, resulting in momentary power loss during acceleration or hill climbing.
• Oil seepage around the housing mating surfaces — A degraded shim ring can distort the seal interface, allowing ATF to weep past the 0634313118 O-RING and other sealing elements.

Technical Specifications

Compatibility

This shim ring is specifically engineered for the ZF WG 65 Series, but it also fits select models in the broader WG family due to shared housing dimensions. Confirmed compatible transmissions include: WG65, WG80, WG120, WG180, and WG200 series. Always verify the required thickness using the original shim stack measurement before installation. When replacing this part, we recommend inspecting the 0636011118 HEXAGON SCREW and the 0636016015 HEXAGON SCREW for thread wear, as these fasteners secure the shim ring assembly.

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