ZF 2095.310.043 SPUR GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2095.310.043 SPUR GEAR is a precision-machined helical gear designed to transfer torque and rotational speed between parallel shafts within the WG100, WG130, and WG131 transmission assemblies. This OEM genuine part, identified by SKU 2095.310.043, is located in the countershaft cluster where it meshes directly with the main drive gear to establish the primary gear ratio. Manufactured from case-hardened alloy steel, it ensures quiet operation and long service life under heavy load conditions. When rebuilding a ZF gearbox, this spur gear is often replaced alongside the 5838109021: DIFFERENTIAL to restore factory clearance tolerances.

Symptoms of Failure

• Whining or howling noise during acceleration: Worn gear teeth produce a distinct high-pitched whine that increases with road speed, indicating pitting or spalling on the tooth flanks.
• Metallic debris in transmission oil: Flakes or silver particles found during oil changes signal advanced wear of the 2095.310.043 gear surface, often accompanied by a 0750117075: TAPER ROLLER BEARING failure.
• Gear slipping or jumping out of mesh: Worn tooth profiles cause incomplete engagement, leading to intermittent power loss under load, especially in lower gears.
• Vibration through the gear lever: Excessive backlash from a worn spur gear transmits noticeable vibration into the shift mechanism, requiring immediate inspection.

Technical Specifications

Compatibility

This spur gear is engineered for the ZF WG100, WG130, and WG131 series transmissions commonly found in medium-duty trucks, buses, and agricultural machinery. It is also compatible with the WG180 and WG200 variants when used in the countershaft position. For proper installation, ensure the mating 2095209019: DIFFERENTIAL is inspected for wear, and secure the assembly with a new 0631329086: SPRING PIN to prevent axial movement.

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