Overview
The ZF 4108.301.471 ADAPTER is a precision-machined OEM genuine component designed to serve as the critical interface between the transmission housing and the hydraulic motor assembly in heavy-duty construction machinery. This adapter ensures correct alignment and fluid sealing within the power transfer system, preventing contamination and maintaining hydraulic pressure. The SKU 4108.301.471 is specifically engineered for ZF powershift transmissions, where it mounts directly to the 4108101160: HOUSING and secures the 0501215908: MOTOR in place. Without this adapter, the transmission cannot maintain proper torque flow to the drivetrain, making it a vital component for operational reliability in loaders, graders, and excavators.
Symptoms of Failure
- Hydraulic fluid seepage at the motor-to-housing joint: A worn or cracked adapter often causes oil to weep from the mating surface, leading to gradual pressure loss and reduced transmission efficiency.
- Abnormal gear engagement noise: When the adapter loses dimensional integrity, the motor can misalign with the housing, producing a distinct clattering or grinding sound during gear shifts.
- Intermittent power loss under load: A failing adapter may allow the motor to shift slightly, causing intermittent slipping or hesitation when the machine is under heavy strain, such as during digging or pushing operations.
- Visible vibration at the transmission bell housing: Excessive play from a degraded adapter transmits vibration through the chassis, often felt in the operator cab during acceleration.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4108.301.471 |
| Material | High-grade ductile cast iron (GGG-40) |
| Outer Diameter | 180 mm |
| Inner Diameter | 95 mm |
| Thickness | 28 mm |
| Weight | 1.45 kg |
| OEM Reference | ZF 4108.301.471 |
| Seal Groove | Integrated O-ring channel |
Compatibility
This adapter is engineered for ZF powershift transmission families commonly deployed in construction machinery. It is a direct fit for the WG180 and WG200 series, as well as the WG160 and WG210 variants. The part also integrates with the 0501320268: COVER and the 0735370298: ROLLER BEARING within the same assembly. Always verify your transmission model tag before ordering to ensure correct fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101160 | HOUSING | Main structural casing for the transmission assembly |
| 0501215908 | MOTOR | Hydraulic drive motor for torque conversion |
| 0501320268 | COVER | Protective end cap for the adapter housing |
| 0735370298 | ROLLER BEARING | Supports rotating shaft loads within the adapter |
| 0501317874 | HOUSING | Secondary housing for clutch pack support |
| 0501317875 | ROLLER | Guides cam disc movement during gear shifts |
| 0501213227 | PISTON | Hydraulic actuator for clutch engagement |
| 0501317876 | COMPRESSION SPRING | Returns piston to neutral position |
| 0501314823 | BUSH | Wear-resistant liner for pivot points |
| 0501314929 | CAM DISC | Controls valve timing in the hydraulic circuit |
