ZF 2099.109.002 DIFFERENTIAL | OEM Genuine Part

Overview

The ZF 2099.109.002 DIFFERENTIAL is a critical torque-distribution component engineered for heavy-duty construction machinery transmissions. Positioned within the final drive assembly, this OEM genuine part transfers rotational force from the driveshaft to the axle shafts while allowing wheel speed variation during turns. The SKU 2099.109.002 integrates directly with the carrier housing and mates with the 2099364014: CROWN WHEEL to form the core differential unit. Precision-machined from high-strength alloy steel, it ensures reliable power delivery under extreme loads in excavators, loaders, and graders.

Symptoms of Failure

• Low-speed clunking or grinding noises from the axle housing during turns, indicating worn differential gears or bearing surfaces.
• Oil seepage around the differential housing caused by degraded seals or housing cracks, often visible as wet spots on the casing.
• Uneven tire wear or wheel hop on uneven terrain, signaling that the differential is no longer compensating for speed differences between left and right wheels.
• Resistance or binding when turning sharply, suggesting internal gear tooth damage or excessive play in the spider gear assembly.

Technical Specifications

Compatibility

This differential is designed for ZF WG-series powershift transmissions commonly used in construction machinery. Compatible models include WG180, WG200, WG210, and WG240 series. It also fits select ZF ERG and Ecolite drivelines found in telescopic handlers and backhoe loaders. Always verify housing dimensions and spline count before installation. The 2099209001: DIFFERENTIAL serves as a direct alternative for earlier production runs, while the 2098309010: DIFFERENTIAL HOUSING and 2098309009: DIFFERENTIAL HOUSING provide structural support for this assembly.

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