ZF 2099.117.021 REAR AXLE HOUS. | OEM Genuine Part

Overview

The ZF 2099.117.021 REAR AXLE HOUSING is a critical structural component within heavy-duty construction machinery drivelines. This OEM genuine part encases the differential and final drive gears, providing the rigid support necessary to transmit torque from the transmission to the wheels. As the primary load-bearing shell, the housing maintains precise alignment for all rotating elements, including the 2099109016 DIFFERENTIAL assembly. The SKU 2099.117.021 is engineered to withstand extreme torsional stresses and shock loads common in earthmoving equipment, ensuring long-term durability in demanding environments.

Symptoms of Failure

• Visible oil seepage around axle seals: Cracks or porosity in the housing casting often lead to lubricant loss, causing gradual gear wear and overheating.
• Unusual whining or grinding from the rear axle: A warped or damaged housing misaligns the 0750117075 TAPER ROLLER BEARING, generating metallic noise during operation.
• Intermittent wheel lock-up or vibration: Structural fatigue in the housing allows the 2093209094 DIFFERENTIAL to shift, causing irregular power delivery and driveline shudder.
• Contaminated gear oil with metal particles: Internal fractures shed debris into the lubricant, accelerating wear on the 2093309078 DIFF.HOUSING and associated components.

Technical Specifications

Compatibility

This rear axle housing is designed for integration with ZF’s heavy-duty powershift transmission series. It is a direct fit for the WG180 and WG200 models, commonly used in wheel loaders, graders, and dump trucks. The housing also supports the WG150 and WG250 series when paired with the correct 2099109016 DIFFERENTIAL and bearing set. Always verify spline counts and bolt patterns against your specific transmission variant before installation.

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