ZF 4699.298.011 RING GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4699.298.011 RING GEAR is a critical torque-transfer component engineered for the planetary gearset within the WG100, WG130, and WG131 transmission series. This OEM genuine part, identified by SKU 4699.298.011, meshes directly with the planetary pinions to deliver smooth power flow from the input shaft to the output flange. As a hardened steel ring with precision-cut internal teeth, it absorbs high rotational loads and maintains gear alignment under heavy-duty industrial conditions. When paired with the 4699101155 HOUSING and the 4699201018 HOUSING, this ring gear forms the core of the rotating assembly, ensuring concentricity and minimal backlash.

Symptoms of Failure

• Erratic gear slipping under load: Worn internal teeth cause the ring gear to lose purchase on planetary pinions, resulting in sudden power loss during acceleration or uphill operation.
• Metallic grinding noise from the transmission housing: Chipped or spalled gear teeth produce a distinct scraping sound, especially when shifting between forward and reverse gears.
• Oil contamination with metallic debris: As the ring gear deteriorates, fine steel particles circulate through the lubricant, visible as glitter in the oil filter or drain pan.
• Vibration at specific RPM ranges: Uneven tooth wear creates harmonic imbalances that transmit through the 4699309077 HOUSING COVER, causing noticeable shudder in the driveline.

Technical Specifications

Compatibility

This ring gear is specifically designed for ZF WG-series industrial transmissions. Verified compatibility includes the WG100, WG130, and WG131 models. It may also be retrofitted into WG180 and WG200 variants where the planetary carrier dimensions match, though confirmation of spline count and housing bore is recommended. The part integrates directly with the 0636100132 TORX SCREW for secure mounting to the carrier flange.

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