Overview
The ZF 2099.117.040 REAR AXLE HOUS. is a critical structural component within heavy-duty construction machinery drivelines. This OEM genuine part serves as the rigid casing that encloses the differential assembly and final drive gears, ensuring precise alignment under extreme torque loads. As the primary load-bearing shell, it protects internal gearsets from contamination while maintaining proper lubrication channels. The SKU 2099.117.040 is engineered specifically for ZF powertrains used in wheel loaders, graders, and dump trucks, where axle housing integrity directly impacts vehicle stability and power transfer efficiency.
Symptoms of Failure
- Oil seepage at axle tube seals – Cracks or warping in the housing cause lubricant to escape, leading to low oil levels and eventual gear damage. Search query: “ZF rear axle housing oil leak repair”.
- Abnormal whining or clunking from the rear axle – A deformed housing misaligns the 2099109039: DIFFERENTIAL and 2099309025: CROWN WHEEL, creating irregular gear mesh noise under load.
- Premature bearing wear – Housing distortion alters preload on the 2098209016: DIFFERENTIAL bearings, causing rapid degradation and vibration during operation.
- Visible cracks near mounting flanges – Stress fractures from repetitive shock loads compromise structural integrity, risking catastrophic axle separation.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 2099.117.040 |
| Material | Ductile cast iron (GJS-500-7) |
| Weight | 38.5 kg (84.9 lbs) |
| Overall Length | 720 mm |
| Mounting Bolt Pattern | 8 x M16, 180 mm PCD |
| Max Torque Capacity | 12,000 Nm |
| Compatible Lubricant | SAE 80W-90 GL-5 |
Compatibility
This rear axle housing is designed for ZF WG180, WG200, and WG310 series transmissions commonly found in construction machinery. It directly interfaces with the 2095309059: DIFF.HOUSING to form the complete axle carrier assembly. The housing accommodates both standard and limited-slip differential configurations used in Volvo, Liebherr, and Caterpillar wheel loaders from the 2000-2015 production era. Always verify axle ratio compatibility before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2099109039 | DIFFERENTIAL | Distributes torque between axle shafts |
| 2099309025 | CROWN WHEEL | Transfers final drive reduction |
| 2098209016 | DIFFERENTIAL | Alternate differential assembly variant |
| 2095309059 | DIFF.HOUSING | Inner differential carrier housing |
| 0631329086 | SPRING PIN | Secures differential cross shaft |
| 0730300820 | THRUST WASHER | Controls axial play in differential |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2095309081 | DIFFERENTIAL AXLE | Cross shaft for spider gears |
| 5838300811 | THRUST WASHER | Side gear thrust management |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Spider gear for torque splitting |
