ZF 4699.302.038 SPUR GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4699.302.038 SPUR GEAR is a critical power transmission component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part functions as a direct-drive gear within the planetary gearset, transferring torque from the input shaft to the output assembly. The SKU 4699.302.038 is precision-machined to maintain exact tooth engagement, reducing backlash and ensuring smooth load distribution under high-stress conditions. It interfaces directly with the PLANET CARRIER and the WHEEL SHAFT to form a robust driveline assembly.

Symptoms of Failure

• Whining or grinding noise during acceleration: Worn tooth profiles on the spur gear create audible metal-on-metal contact, often mistaken for bearing failure.
• Intermittent gear slipping under load: When the gear’s hardened surface erodes, the transmission loses positive engagement, causing momentary power loss on inclines.
• Metallic debris in transmission fluid: Flaking or pitting on the gear teeth introduces fine steel particles into the oil, detectable during routine filter inspections.
• Vibration at specific RPM ranges: Uneven wear on the spur gear’s root radius induces harmonic vibrations that resonate through the HOUSING assembly.

Technical Specifications

Compatibility

This spur gear is specifically designed for ZF’s WG100, WG130, and WG131 transmission models. It is also compatible with the WG180 and WG200 series when used in conjunction with the BASIC PARTS kit. The gear’s spline interface matches all standard ZF planetary carriers from 1998 onward. For applications requiring a complete rebuild, pair this gear with the INNER DISK CARRIER and RING GEAR to restore factory tolerances.

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