ZF 2094.304.042 GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2094.304.042 GEAR is a precision-machined helical gear engineered for the auxiliary drive train within the WG100, WG130, and WG131 transmission series. This component transmits rotational torque from the input shaft to the countershaft assembly, directly influencing gear ratio stability and load distribution under heavy-duty cycles. As an OEM genuine part, SKU 2094.304.042 ensures exact tooth geometry and surface hardness required for sustained commercial vehicle operation. It is mounted on the main shaft cluster and interfaces directly with the 2094104412: MAIN SHAFT and 2094304054: MAIN SHAFT to maintain synchronized power flow.

Symptoms of Failure

• Audible whining or grinding during gear engagement — Worn tooth flanks on the 2094.304.042 gear produce a high-pitched metallic noise, especially under load or during deceleration, indicating surface fatigue or pitting.
• Intermittent gear slippage in mid-range speeds — When the gear’s spline interface wears, torque transfer becomes inconsistent, causing the transmission to momentarily lose drive in 3rd or 4th gear.
• Metallic debris in transmission oil filter — Flaking material from the gear’s hardened surface contaminates the lubricant, often visible as silver particles during routine oil changes.
• Hard shifting or gear clash — A damaged gear profile prevents smooth meshing with the 2094106010: SHIFT SYSTEM, leading to resistance when moving the shift lever into position.

Technical Specifications

Compatibility

This gear is specifically designed for ZF WG100, WG130, and WG131 series transmissions used in medium-duty trucks, buses, and off-highway equipment. It is not interchangeable with WG180 or WG200 models due to differing shaft diameters and helix angles. The 2094.304.042 gear works in conjunction with the 2094206001: GEARSHIFT SHAFT to control gear selection, and its replacement should always include inspection of the 2094304054: MAIN SHAFT for spline wear.

Related Components

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