ZF 2098.346.040 SPUR GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2098.346.040 SPUR GEAR is a precision-machined component engineered for the auxiliary drive train within ZF WG100, WG130, and WG131 transmissions. This OEM genuine part, identified by SKU 2098.346.040, functions as a critical power transfer element, meshing directly with the output shaft to modulate rotational speed and torque distribution. Positioned within the gear cluster assembly, it ensures synchronized engagement between the main transmission and the differential unit. For optimal driveline integrity, this spur gear is often installed alongside the 2098109042: DIFFERENTIAL and the 2098309011: CROWN WHEEL to maintain consistent load handling.

Symptoms of Failure

• Audible whining or chattering during deceleration: Worn gear teeth create irregular contact patterns, producing a distinct high-pitched noise that intensifies under load.
• Vibration through the gearshift lever: As the spur gear loses tooth profile integrity, harmonic vibrations transmit directly into the cab, indicating imminent failure.
• Intermittent power loss in lower gears: A failing 2098.346.040 spur gear causes slippage between meshing surfaces, resulting in momentary torque interruption during acceleration.
• Metallic debris in transmission fluid: Flaking or pitting on the gear face contaminates the oil, often visible during routine drain intervals.

Technical Specifications

Compatibility

This spur gear is specifically designed for the ZF WG100, WG130, and WG131 series transmissions. It is a direct fit for models produced between 2005 and 2018, including variants with integrated retarders. While primarily intended for these three models, the 2098.346.040 may also be compatible with the WG180 series when used in conjunction with the 2099209001: DIFFERENTIAL and the 2098309010: DIFFERENTIAL HOUSING. Always verify tooth count and spline configuration against your existing assembly before installation.

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