ZF 5838.200.008 SPUR GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 5838.200.008 SPUR GEAR is a precision-machined component engineered for the auxiliary drive and power take-off (PTO) circuits within ZF WG100, WG130, and WG131 transmissions. This OEM genuine part transfers rotational force from the input shaft to the differential assembly, ensuring synchronized torque distribution under heavy load. The SKU 5838.200.008 sits directly between the main shaft and the 5838109007 DIFFERENTIAL, acting as a critical link in the gear train. Manufactured to ZF’s original tolerances, it guarantees minimal backlash and consistent meshing with mating gears, reducing vibration and extending service life in commercial vehicle drivelines.

Symptoms of Failure

• Whining or grinding noise during PTO engagement: A worn 5838.200.008 spur gear produces a high-pitched whine or metallic grinding when the auxiliary drive is activated, indicating tooth surface fatigue or pitting.
• Intermittent gear slipping under load: If the gear teeth have worn beyond specification, the transmission may momentarily lose torque transfer, causing a “skip” sensation during acceleration or hill climbing.
• Metal debris in transmission oil: Flakes or fine metallic particles found during routine oil changes often originate from a failing spur gear, especially when paired with a failing 0750117075 TAPER ROLLER BEARING that allows shaft misalignment.
• Increased operating temperature near the differential housing: Excessive friction from a damaged gear can raise local temperatures, accelerating wear on the 2095209019 DIFFERENTIAL and surrounding thrust washers.

Technical Specifications

Compatibility

This spur gear is designed exclusively for ZF WG-series transmissions with auxiliary drive capability. It is a direct fit for the following models: WG100, WG130, and WG131. The part also serves as a replacement in certain WG180 and WG200 variants when the auxiliary gear train uses the same 23-tooth configuration. Always verify the tooth count and bore diameter against your existing gear before installation. For proper assembly, secure the gear using a new 0631329086 SPRING PIN to prevent axial movement on the shaft.

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