Overview
The ZF 4108.103.161 OUTPUT is a critical driveline component engineered for heavy-duty construction machinery transmissions. This OEM genuine part serves as the primary power take-off point, transferring rotational force from the transmission’s planetary gearset to the final drive or auxiliary systems. Positioned at the rear of the main transmission housing, the output assembly interfaces directly with the 4108101066 HOUSING and the 4108201298 HOUSING to ensure precise alignment and load distribution. The SKU 4108.103.161 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit without modification. When paired with the 0501215601 OIL LEVEL GAGE and 0501325471 SEALING RING, this output unit maintains optimal lubrication and contamination control within the drivetrain.
Symptoms of Failure
When the ZF 4108.103.161 OUTPUT begins to degrade, operators often notice distinct operational issues. Oil seepage around the output flange is a common early indicator, typically caused by a worn sealing surface or compromised O-ring. Driveline vibration during acceleration signals bearing wear or spline damage within the output assembly. Intermittent power loss to the wheels occurs when the output shaft’s internal splines strip, preventing full torque transfer. Metallic grinding noises from the transmission rear suggest advanced wear of the output gear teeth, which can quickly escalate to catastrophic failure if ignored. These symptoms are frequently reported in ZF WG180 and WG200 series transmissions operating under high cyclic loads.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4108.103.161 |
| OEM Reference | ZF 4108.103.161 |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 4.2 kg (9.26 lbs) |
| Overall Length | 185 mm |
| Flange Diameter | 120 mm |
| Spline Count | 21 internal splines |
| Max Torque Capacity | 1,200 Nm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This output component is designed for ZF’s heavy-duty powershift transmission families, specifically the WG180, WG200, and WG250 series. It is also compatible with select Ecomat 4HP and 6HP models used in wheel loaders, dozers, and graders. The 4108.103.161 output interfaces directly with the 4108301475 INPUT SHAFT and relies on the 0750116277 BALL BEARING for smooth rotation. For proper installation, always use the 0630502039 RETAINING RING and 0630531064 RETAINING RING to secure the assembly. The 0636302014 SCREW PLUG seals the output housing’s drain port. Verify your transmission’s serial number against ZF’s parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101066 | HOUSING | Encloses the output shaft assembly |
| 4108201298 | HOUSING | Secondary housing for bearing support |
| 0501215601 | OIL LEVEL GAGE | Monitors transmission fluid level |
| 0501325471 | SEALING RING | Prevents oil leakage at output flange |
| 0730365280 | TYPE PLATE | Identification tag for transmission model |
| 4108301475 | INPUT SHAFT | Transfers engine torque to the output |
| 0750116277 | BALL BEARING | Reduces rotational friction |
| 0630502039 | RETAINING RING | Secures bearing in housing |
| 0630531064 | RETAINING RING | Locks output shaft axially |
| 0636302014 | SCREW PLUG | Seals housing drain port |
