ZF 4699.200.011 RING GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4699.200.011 RING GEAR is a critical torque-transfer component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part sits within the planetary gear set, where it meshes directly with the planet gears to manage high-load rotational forces. As a stationary or rotating element depending on the gear state, the ring gear ensures smooth power distribution from the input shaft to the output. The SKU 4699.200.011 is precision-machined to ZF’s exacting tolerances, making it a direct replacement for worn units in heavy-duty industrial drivelines.

Symptoms of Failure

• Transmission gear slipping under load: When the ring gear’s internal teeth wear unevenly, the planetary gears lose engagement, causing intermittent slipping during acceleration or uphill operation.
• Metallic grinding or whining noise from the gearbox: A failing 4699.200.011 often produces a distinct high-pitched whine or grinding sound, especially in lower gears, as the hardened tooth surfaces degrade.
• Oil contamination with metallic debris: Worn ring gear teeth shed fine metal particles into the transmission fluid, which can be detected during routine oil changes or via magnetic drain plugs.
• Vibration during gear engagement: Excessive backlash from a damaged ring gear causes noticeable driveline shudder when shifting between forward and reverse.

Technical Specifications

Compatibility

This ring gear is specifically designed for ZF’s WG-series powershift transmissions. Verified compatibility includes the WG100, WG130, and WG131 models. It may also be suitable for the WG180 and WG200 series when used in the rear planetary set, though cross-referencing with the transmission serial number is recommended. The 4699.200.011 is not interchangeable with the 4699300153 ring gear, which serves a different planetary stage.

When replacing this ring gear, it is essential to inspect the 4699100023 BASIC PARTS kit for seals and bearings, as well as the 4699300138 HOUSING for cracks. The 4699300156 GEAR SHAFT should be checked for spline wear, and the 4699300127 PLANET CARRIER must be inspected for pitting on the pinion bores.

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