ZF 2093.117.003 REAR AXLE HOUS. | OEM Genuine Part

Overview

The ZF 2093.117.003 REAR AXLE HOUSING is a structural core component within the final drive assembly of heavy-duty construction machinery. This OEM genuine part encloses the differential and axle shafts, providing the rigid mounting point for the wheel hubs and absorbing the immense torque loads generated during operation. As the primary load-bearing shell, it ensures precise gear alignment and protects internal components from contamination. The SKU 2093.117.003 is engineered to ZF’s original specifications, guaranteeing a direct fit and long service life in demanding environments such as wheel loaders and graders.

Symptoms of Failure

• Visible oil seepage from axle housing seals: Cracks or porosity in the housing allow gear oil to escape, leading to low lubricant levels and accelerated wear on internal gears.
• Abnormal whining or grinding noise during turns: A distorted housing misaligns the differential, causing metal-on-metal contact between the ring gear and pinion.
• Vibration under load: Fatigue fractures in the housing mounting flanges cause the entire axle assembly to shift, creating driveline shudder during acceleration or reversing.
• Contaminated gear oil with metallic debris: Internal housing surface spalling releases iron particles into the lubricant, which can be detected during routine oil analysis.

Technical Specifications

Compatibility

This rear axle housing is designed for ZF’s heavy-duty transmission families used in construction equipment. It is a direct replacement for units in the WG180 and WG200 series, as well as the WG250 series where the housing is shared across multiple axle configurations. The part also fits select AP400 and AP500 dropbox assemblies. Always verify the casting number on your existing housing before installation.

During a full axle rebuild, this housing is installed alongside the 2093109003: DIFFERENTIAL carrier assembly, which mounts directly inside the housing cavity. The differential is supported by a 0750117075: TAPER ROLLER BEARING on each side to handle radial and axial loads. For complete driveline restoration, technicians also replace the 2093209096: DIFFERENTIAL side gears and the 2093309073: DIFF.HOUSING cover plate to ensure proper sealing and gear mesh.

Related Components

Frequently Asked Questions

Q: Can the 2093.117.003 housing be welded if cracked?
A: Welding is not recommended. The ductile iron material requires specialized preheating and post-weld heat treatment to avoid embrittlement. Replacement with a new OEM housing is the only reliable repair.

Q: What is the torque specification for the housing bolts?
A: The twelve M16 mounting bolts must be tightened to 210 Nm (155 ft-lbs) in a crosswise pattern. Always use new lock washers and apply thread locker to prevent loosening under vibration.

Q: Does this housing include the breather valve?
A: No. The 2093.117.003 is supplied as a bare housing casting. The breather valve, drain plug, and fill plug must be transferred from your original housing or ordered separately.