ZF 5838.117.004 REAR AXLE HOUS. | OEM Genuine Part

Overview

The ZF 5838.117.004 REAR AXLE HOUS. is a critical structural component designed to encase and protect the differential assembly in heavy-duty construction machinery transmissions. This OEM genuine part serves as the primary load-bearing shell, supporting the axle shafts and maintaining precise alignment of internal gears under extreme torque and shock loads. As the central housing for the drivetrain, it directly interfaces with the DIFFERENTIAL HOUSING to form a sealed unit that channels lubricant flow and dissipates heat. The SKU 5838.117.004 is precision-machined from high-strength cast iron to withstand the rigors of earthmoving equipment, graders, and loaders operating in demanding environments.

Symptoms of Failure

• Persistent oil seepage at axle flange seals: When the rear axle housing develops stress cracks or warpage, lubricant leaks become visible around the mounting points, often mistaken for simple seal failure.
• Abnormal gear whine or clunking during turns: A compromised housing can misalign the DIFFERENTIAL assembly, causing uneven gear mesh that produces rhythmic noise under load.
• Vibration through the chassis at operating speeds: Structural fatigue in the housing allows the axle shafts to deflect, transferring harmonic vibrations to the vehicle frame during acceleration or braking.
• Metal debris in differential oil: Internal cracking of the housing bore can cause fretting wear on the TAPER ROLLER BEARING seats, generating metallic particles that contaminate the lubricant.

Technical Specifications

Compatibility

This rear axle housing is engineered for ZF WG-series powershift transmissions commonly found in construction machinery. It is a direct fit for the WG180, WG200, and WG250 models used in wheel loaders and telehandlers. The housing also supports the WG310 series when paired with the correct SPRING PIN kit for differential lock engagement. Always verify axle ratio compatibility before installation, as the housing casting accommodates both standard and limited-slip differential configurations.

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