ZF 4108.303.269 PLANET CARRIER | OEM Genuine Part

Overview

The ZF 4108.303.269 PLANET CARRIER is a critical rotating assembly within the planetary gear set of ZF heavy-duty transmissions. This OEM genuine part serves as the structural hub that supports the planetary gears, pins, and needle bearings, enabling torque multiplication and speed reduction in construction machinery drivelines. The carrier must withstand extreme radial and axial loads while maintaining precise gear alignment. The SKU 4108.303.269 is engineered to factory tolerances, ensuring proper load distribution across the planet gears. It integrates directly with the 4108101112: HOUSING and the 4108201177: HOUSING to form the complete planetary assembly.

Symptoms of Failure

• Erratic gear engagement or slipping under load: A worn planet carrier allows excessive gear play, causing intermittent power loss during acceleration or uphill operation.
• Metallic grinding or whining noise from the transmission: Damaged carrier bores or cracked carrier arms produce distinct high-pitched sounds, especially in lower gears.
• Oil contamination with metallic debris: Flaking or spalling on the carrier surface introduces steel particles into the hydraulic system, often visible during oil changes.
• Transmission overheating: Increased friction from misaligned planet gears forces the system to work harder, raising operating temperatures beyond normal limits.

Technical Specifications

Compatibility

This planet carrier is designed for ZF power-shift transmissions commonly used in wheel loaders, graders, and excavators. It is a direct fit for the ZF WG180 and ZF WG200 series, as well as the ZF 4WG-200 and ZF 6WG-200 models. The carrier interfaces with the 0636302056: SCREW PLUG for lubrication retention and the 4108301304: BEARING COVER to seal the planetary gear cavity. Always verify your transmission model and serial number before installation.

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