ZF 6002.000.968 SYNCHRONIZER | OEM Genuine Part

Overview

The ZF 6002.000.968 SYNCHRONIZER is a precision-engineered OEM genuine part responsible for matching gear speeds within the transmission assembly during shifts. Positioned directly on the main shaft between gear clusters, this synchronizer ensures smooth engagement by applying controlled friction to equalize rotational velocity before the dog clutch locks in. The SKU 6002.000.968 is a critical wear component in heavy-duty construction machinery transmissions, directly influencing shift quality and drivetrain longevity. When installed alongside the 2094101012 TRANSMISSION HOUSING, it maintains proper alignment and clearance for consistent operation under high torque loads.

Symptoms of Failure

• Grinding or crunching noise during gear engagement — A worn synchronizer ring fails to slow the input shaft, causing metal-on-metal contact between gears. This is often the first audible sign of failure in ZF WG-series transmissions.
• Gear slipping or popping out of gear under load — When the synchronizer hub or sleeve loses its indexing capability, the transmission cannot maintain positive engagement, particularly in lower gears during excavation or grading operations.
• Hard shifting requiring excessive force — A seized or glazed synchronizer cone prevents smooth sliding of the shift sleeve, demanding increased effort from the operator and leading to premature wear of the shift fork and 2094301036 HOUSING components.
• Delayed engagement after clutch release — The synchronizer cannot adequately match speeds, resulting in a noticeable lag before the gear fully engages, often accompanied by a brief whine or vibration.

Technical Specifications

Compatibility

This synchronizer is designed for ZF heavy-duty powershift transmissions commonly used in construction machinery. Based on its design and dimensions, the 6002.000.968 is compatible with the following ZF transmission models: WG180, WG200, WG210, and WG220. These models are found in wheel loaders, dozers, and graders from manufacturers such as Caterpillar, Komatsu, and Volvo. Always verify the transmission serial number and consult the 2094301030 GASKET specifications for proper sealing during installation.

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