ZF 4699.302.339 DRIVE PINION for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4699.302.339 DRIVE PINION is a precision-machined gear component engineered for the input shaft assembly of ZF WG100, WG130, and WG131 powershift transmissions. This OEM genuine part transfers rotational force from the torque converter to the planetary gear sets, directly influencing shift timing and torque distribution. The SKU 4699.302.339 is manufactured to ZF’s original metallurgical specifications, ensuring correct tooth engagement and minimal backlash. When installed, this drive pinion mates with the 4699101159 HOUSING and the 4699301254 HOUSING to form the primary gear train housing, while the 4699298049 HOUSING KIT provides the necessary sealing and alignment for long-term durability.

Symptoms of Failure

• Whining or grinding noise during gear engagement: A worn drive pinion produces a high-pitched whine under load, especially when shifting from neutral to forward or reverse. This is a common search query for “ZF transmission whining noise when accelerating.”
• Delayed or harsh shifting between gears: As the pinion teeth wear, backlash increases, causing a noticeable lag or a jarring engagement. Technicians often search for “WG100 transmission shifting hard” when this part fails.
• Metal debris in transmission fluid: Flaking or pitting on the pinion teeth releases metallic particles into the oil. This symptom is frequently queried as “metal shavings in ZF transmission fluid.”
• Intermittent loss of drive power: Severe wear can cause the pinion to skip teeth under heavy torque, resulting in a temporary loss of propulsion. This is a critical failure mode for “ZF WG131 transmission slipping under load.”

Technical Specifications

Compatibility

This drive pinion is specifically designed for ZF WG-series powershift transmissions. Verified compatibility includes the following models: WG100, WG130, and WG131. It may also be suitable for certain variants of the WG180 and WG200 transmissions, though cross-referencing the original equipment manufacturer (OEM) part number is recommended. The pinion interfaces directly with the 4699309123 HOUSING COVER, which protects the gear train from contamination. For complete assembly, ensure the 0636104255 CAP SCREW and 0631306174 CYLINDRICAL PIN are installed to secure the housing components.

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