ZF 2094.304.039 GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2094.304.039 GEAR is a precision-machined helical gear designed for the auxiliary drive and countershaft assembly in ZF’s WG100, WG130, and WG131 industrial transmissions. This OEM genuine part transfers torque from the input shaft to the main drive train, ensuring smooth power delivery under heavy loads. As a critical component within the Gears & Shafts category, the SKU 2094.304.039 directly interfaces with the 2094104412: MAIN SHAFT and the 2094304054: MAIN SHAFT to maintain correct gear mesh alignment. Without this gear, the transmission cannot achieve its rated torque capacity.

Symptoms of Failure

• Whining or howling noise during acceleration: Worn gear teeth produce a distinct high-pitched sound, especially under load, indicating surface pitting or tooth root fatigue.
• Intermittent gear slipping in higher ranges: A damaged 2094.304.039 gear loses its ability to maintain positive engagement, causing the transmission to momentarily lose drive in WG130 units.
• Metallic debris in transmission oil filter: Flaking from the gear’s hardened surface contaminates the lubrication system, accelerating wear on the 2094106010: SHIFT SYSTEM.
• Vibration through the gearshift lever: Eccentric wear on this gear transmits irregular motion to the 2094206001: GEARSHIFT SHAFT, causing noticeable handle shake.

Technical Specifications

Compatibility

This gear is factory-specified for ZF WG100, WG130, and WG131 transmissions. It also fits select WG180 and WG200 series units when used in the auxiliary drive position, though cross-referencing with the main shaft assembly is recommended. The 2094.304.039 gear is not compatible with WG150 or WG250 models without modification to the 2094304054: MAIN SHAFT spline interface.

Related Components

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“text”: “Common failure signs include a whining noise during acceleration, intermittent gear slipping in higher ranges, metallic debris in the oil filter, and vibration through the gearshift lever caused by uneven tooth wear.”
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“text”: “No. Replacing the 2094.304.039 gear requires partial disassembly of the transmission case to access the countershaft. We recommend replacing the snap ring (0630513070) and washer (2094306019) simultaneously.”
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