ZF 4699.801.221 GK10 | OEM Genuine Part

Overview

The ZF 4699.801.221 GK10 is a precision-engineered clutch pack assembly designed for heavy-duty construction machinery transmissions. Positioned within the planetary gearset of ZF’s powershift systems, this OEM genuine part manages torque transfer between rotating shafts during gear shifts. The SKU 4699.801.221 specifically refers to the GK10 variant, which incorporates friction discs and steel separator plates optimized for high-load applications. When installed alongside the 4699001201 GK10 assembly, it ensures synchronized engagement under extreme operating conditions.

Symptoms of Failure

When the ZF 4699.801.221 GK10 wears out, operators may notice these specific failure indicators:

• Delayed or harsh gear engagement – Worn friction material causes hesitation or abrupt shifts, especially when transitioning from neutral to drive under load.
• Transmission oil contamination – Degraded clutch particles mix with hydraulic fluid, producing a dark, burnt smell and visible debris in the oil filter.
• Intermittent power loss during uphill operation – Slipping clutch packs fail to hold torque, causing the machine to lose momentum on inclines.
• Audible grinding or whining noises – Metal-on-metal contact from worn separator plates generates distinct sounds during gear changes.

Technical Specifications

Compatibility

This GK10 clutch pack is engineered for ZF powershift transmissions commonly found in wheel loaders, dozers, and excavators. It directly fits the following transmission models:

• ZF WG180
• ZF WG200
• ZF WG210
• ZF WG310

For proper installation, ensure the 4699101125 HOUSING is free of scoring, and verify alignment with the 4699102154 INPUT shaft and 4699103016 OUTPUT flange.

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