Overview
The ZF 2099.117.053 REAR AXLE HOUSING is a critical structural component within heavy-duty construction machinery drivelines. This OEM genuine part encloses and protects the differential assembly, crown wheel, and axle shafts, ensuring precise alignment under extreme torque loads. As the primary load-bearing casing for the rear axle system, the 2099.117.053 housing maintains gear mesh accuracy and prevents contamination from debris. This SKU is engineered specifically for ZF transmissions operating in wheel loaders, graders, and dump trucks, where it absorbs shock loads and distributes stress evenly across the axle assembly.
Symptoms of Failure
- Oil seepage at axle housing seals – Cracks or porosity in the housing cause lubricant to escape, leading to low oil levels and eventual gear damage. Look for drips near the differential mounting flange.
- Abnormal whining or grinding from rear axle – A warped or misaligned housing alters gear contact patterns, producing a rhythmic noise that intensifies under load. This often indicates the housing can no longer support the CROWN WHEEL alignment.
- Vibration during acceleration or turning – Fatigue fractures in the housing allow the DIFFERENTIAL assembly to shift, causing driveline shudder that worsens with speed changes.
- Metal particles in axle oil – Internal housing wear or spalling introduces ferrous debris into the lubricant, signaling imminent failure of the DIFFERENTIAL bearings.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 2099.117.053 |
| Material | High-strength nodular cast iron (GGG-50) |
| Weight | 47.3 kg (104.3 lbs) |
| Overall Length | 620 mm |
| Mounting Bolt Pattern | 12 x M16 on 180 mm PCD |
| Axle Tube Diameter | 120 mm |
| Oil Capacity (Housing Only) | 6.8 liters |
| OEM Reference | ZF 2099.117.053 |
Compatibility
This rear axle housing is designed for ZF WG180, WG200, and WG250 series transmissions commonly used in construction machinery. It directly replaces the DIFFERENTIAL HOUSING on models with a 12-bolt flange pattern. The housing also accommodates the DIFFERENTIAL HOUSING variant for WG200 applications. For optimal performance, pair this housing with the AXLE BEVEL GEAR and AXLE BEVEL GEAR sets. Verify your transmission serial number before ordering, as the DIFFERENTIAL BEVEL GEAR orientation varies between series.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2099109002 | DIFFERENTIAL | Distributes torque between axle shafts |
| 2099364014 | CROWN WHEEL | Transfers power from pinion to differential |
| 2099209001 | DIFFERENTIAL | Alternate differential assembly for WG250 |
| 2098309010 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 2098309009 | DIFFERENTIAL HOUSING | Compatible housing for WG200 |
| 2098309031 | AXLE BEVEL GEAR | Drives axle shafts from differential |
| 2098309030 | AXLE BEVEL GEAR | Alternate ratio bevel gear |
| 2098309032 | DIFFERENTIAL BEVEL GEAR | Internal differential gear set |
| 12883200682 | THRUST WASHER | Reduces axial play in differential |
| 0635332059 | BALL BEARING | Supports axle shaft rotation |
