Overview
The ZF 5838.300.821 REAR AXLE HOUSING is a critical structural component engineered for heavy-duty construction machinery drivelines. This OEM genuine part encloses the differential assembly and final drive gears, providing the rigid foundation required to withstand extreme torsional loads and shock impacts during excavation, grading, and material handling operations. As the primary load-bearing shell in the rear axle system, the 5838.300.821 housing ensures precise alignment of internal rotating elements, directly influencing torque distribution and wheel-end performance. The SKU 5838.300.821 is precision-cast from high-strength alloy iron to maintain dimensional stability under continuous high-stress cycles.
Symptoms of Failure
- Persistent oil seepage at axle tube seals: Cracks or porosity in the housing casting often lead to gradual lubricant loss, visible as wet spots around the differential carrier mounting face.
- Abnormal whining or grinding from the rear axle center: A warped or cracked housing can misalign the 2095109011: DIFFERENTIAL assembly, causing gear tooth contact pattern disturbances and audible metallic noise during acceleration.
- Premature bearing failure in the carrier: Distortion of the housing bore reduces preload on the 0750117075: TAPER ROLLER BEARING, leading to excessive radial play and rapid wear of the bearing raceways.
- Vibration during loaded turns: Structural fatigue in the housing allows the 2095209037: DIFFERENTIAL to shift under load, producing low-frequency shuddering felt through the chassis.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 5838.300.821 |
| Material | Ductile Cast Iron (GJS-500-7) |
| Dry Weight | 48.5 kg (106.9 lbs) |
| Overall Length | 1,620 mm |
| Axle Tube Diameter | 120 mm |
| Bolt Pattern (Carrier) | 12 x M16 on 220 mm PCD |
| OEM Reference | ZF 5838.300.821 |
Compatibility
This rear axle housing is designed for integration with ZF WG-series powershift transmissions commonly deployed in wheel loaders and telehandlers. It is a direct fit for the WG180 and WG200 transmission models, as well as the heavy-duty WG310 series used in larger articulated dump trucks. The housing accommodates the 2095309059: DIFF.HOUSING and mates with axle shafts requiring a 10-spline input configuration. Always verify axle ratio compatibility before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109011 | DIFFERENTIAL | Distributes torque between left and right wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation under axial loads |
| 2095209037 | DIFFERENTIAL | Alternate ratio differential for WG200 applications |
| 2095309059 | DIFF.HOUSING | Encloses differential gear set within the axle housing |
| 0631329086 | SPRING PIN | Secures differential pinion shaft in position |
| 0730300820 | THRUST WASHER | Controls axial clearance of differential side gears |
| 4482360002 | AXLE BEVEL GEAR | Transfers power from pinion to ring gear |
| 2095309081 | DIFFERENTIAL AXLE | Cross shaft for differential spider gears |
| 5838300811 | THRUST WASHER | Spacer for differential case bearing preload |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Side gear for wheel speed differentiation |
