ZF 4699.303.013 SPACER TUBE | OEM Genuine Part

Overview

The ZF 4699.303.013 SPACER TUBE is a precision-machined OEM genuine component designed to maintain critical axial clearances within ZF heavy-duty transmission assemblies. Positioned between the main shaft and adjacent bearing surfaces, this spacer tube ensures proper load distribution and alignment during high-torque operations in construction machinery. As an integral part of the rotating assembly, the SKU 4699.303.013 works in conjunction with the 4699101046 HOUSING to prevent metal-on-metal contact and reduce vibrational stress. Its exacting tolerances directly influence gear mesh patterns and overall drivetrain longevity.

Symptoms of Failure

• Transmission oil leaks near the shaft housing — When the spacer tube wears unevenly, it compromises the seal surface, allowing ATF to escape past the 4699301109 HOUSING interface.
• Gear engagement hesitation or slipping under load — A collapsed or deformed spacer tube alters the end-play of the shaft, causing delayed clutch pack engagement in WG-series transmissions.
• Metallic grinding noise during shifting — Excessive axial play from a worn 4699.303.013 allows gear teeth to contact the 4699301017 BEARING COVER, producing audible wear debris.
• Increased vibration at the PTO output — Loss of spacer tube integrity unbalances the rotating assembly, transmitting harsh harmonics through the 4699301085 COVER.

Technical Specifications

Compatibility

This spacer tube is engineered for ZF WG-series powershift transmissions commonly used in wheel loaders, graders, and excavators. It is a direct fit for the following models:

• ZF WG180 (all variants)
• ZF WG200 (including WG200-2 and WG200-3)
• ZF WG210 (early production runs)
• ZF 4WG-310 (when used with 4-speed countershaft designs)

Always verify the spacer tube’s orientation during installation—the chamfered edge must face the 4699301109 HOUSING to ensure proper oil flow channels.

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