ZF 2099.117.050 REAR AXLE HOUS. | OEM Genuine Part

Overview

The ZF 2099.117.050 REAR AXLE HOUS. is a critical structural component in heavy-duty construction machinery drivelines. This OEM genuine part encases the final drive gearing and differential assembly, providing the rigid mounting point for axle shafts and wheel ends. As the primary load-bearing shell, it channels torque from the transmission to the wheels while withstanding extreme torsional stress and shock loads from rough terrain. The SKU 2099.117.050 is precision-machined to maintain exact gear mesh alignment, ensuring that the 2099109045 DIFFERENTIAL and 2093209094 DIFFERENTIAL operate within factory tolerances. This housing is designed for direct bolt-on replacement in ZF axle assemblies used on wheel loaders, graders, and excavators.

Symptoms of Failure

• Hypoid oil seepage from housing seams: Cracks or porosity in the casting cause gear oil to weep around the axle tube joints, leaving visible wet spots on the housing exterior.
• Abnormal whining or grinding during turns: A warped or misaligned housing forces the 0750117075 TAPER ROLLER BEARING to bind, producing a cyclic noise that intensifies under load.
• Premature differential bearing failure: Distorted bearing bores in the housing cause uneven roller wear, leading to metal debris in the oil and eventual pinion seizure.
• Axle shaft end-play beyond specification: Housing face wear allows the 2093309078 DIFF.HOUSING to shift axially, creating excessive backlash in the final drive.

Technical Specifications

Compatibility

This rear axle housing is engineered for ZF heavy-duty transmission families that utilize modular drop-box axles. It is a direct fit for the WG180 and WG200 series power dividers, commonly paired with the WG150 transfer case in articulated dump trucks. The housing also mounts to WG210 and WG250 series final drives used in 20-35 ton excavators. Always verify the axle ratio and housing flange pattern against your existing unit before installation.

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