ZF 2094.310.121 SPUR GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2094.310.121 SPUR GEAR is a precision-engineered OEM genuine component designed for the intermediate shaft assembly within ZF’s WG100, WG130, and WG131 transmission series. This gear is responsible for transferring rotational force between parallel shafts, ensuring smooth torque delivery and consistent gear mesh under heavy-duty operating conditions. As a critical element of the Gears & Shafts category, the SKU 2094.310.121 is machined from case-hardened alloy steel to withstand high cyclic loads and thermal stress. When installed alongside the 2094009020: T 7336 L thrust washer, this spur gear maintains axial alignment and reduces frictional wear during load shifts.

Symptoms of Failure

• Whining or howling noise during acceleration: A worn 2094.310.121 gear often produces a distinct high-pitched whine under load, indicating pitting or spalling on the tooth flanks.
• Intermittent gear slipping under heavy torque: As the spur gear loses tooth profile integrity, the transmission may momentarily lose power transfer, especially during uphill climbs or towing.
• Metallic debris in the transmission oil pan: Flaking or chipped gear teeth generate visible steel particles in the fluid, often accompanied by a gritty feel during shifting.
• Vibration at specific RPM ranges: Uneven wear on the gear’s root radius causes harmonic vibrations that resonate through the driveline, worsening over time.

Technical Specifications

Compatibility

This spur gear is engineered for the WG100, WG130, and WG131 ZF transmission models. It is also compatible with select variants of the WG180 and WG200 series where the intermediate shaft gear train shares identical tooth geometry and spline dimensions. Always verify the gear count and bore diameter against your existing assembly. The gear interfaces directly with the 2094101017: TRANSMISSION HOUSING and the 2094298054: HOUSING to ensure proper bearing support and oil circulation. Additionally, the 2094301069: HOUSING provides the necessary cavity for the gear’s axial retention.

Related Components