Overview
The ZF 4108.103.477 OUTPUT is a critical OEM genuine component engineered for the rear output section of heavy-duty ZF powershift transmissions used in construction machinery. This part serves as the final torque transfer interface, connecting the transmission’s internal planetary gearset to the driveline or axle. Designed to withstand extreme axial and radial loads, the 4108.103.477 ensures precise rotational alignment and minimal power loss during high-torque operations. As a factory-spec replacement, it guarantees exact fitment and durability for demanding applications like wheel loaders, graders, and dozers. The SKU 4108.103.477 is often paired with the 4108101068: HOUSING and 4108201177: HOUSING to complete the output assembly.
Symptoms of Failure
When the ZF 4108.103.477 OUTPUT begins to wear, operators may notice distinct performance issues. Oil leaks near the rear transmission flange often occur due to compromised sealing surfaces, leading to gradual fluid loss. Gear slipping under load is another common symptom, as worn output splines fail to maintain positive engagement with the driveshaft. Vibration or driveline shudder during acceleration indicates bearing surface degradation within the output hub. Additionally, metallic debris in the transmission oil filter can signal advanced wear of the output component. Addressing these symptoms promptly prevents cascading damage to the 0636302056: SCREW PLUG and surrounding housings.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4108.103.477 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 185 mm |
| Flange Diameter | 130 mm |
| Spline Count | 14-tooth involute spline |
| Weight | 3.8 kg |
| OEM Reference | ZF 4108.103.477 |
| Surface Treatment | Black oxide corrosion protection |
Compatibility
This output component is designed for ZF’s WG series powershift transmissions commonly deployed in construction machinery. It directly fits the WG180, WG200, and WG220 models. The 4108.103.477 is also compatible with select WG150 and WG250 variants when used with the appropriate 4108301304: BEARING COVER. For proper sealing, always install a new 0750110040: SHAFT SEAL and 4108306173: GASKET during replacement. Verify your transmission serial number against ZF’s parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101068 | HOUSING | Encloses the output shaft assembly |
| 4108201177 | HOUSING | Rear transmission case section |
| 0636302056 | SCREW PLUG | Seals oil passages in output area |
| 4108301304 | BEARING COVER | Retains output shaft bearing |
| 4108306173 | GASKET | Prevents oil leakage at mating surfaces |
| 0750110040 | SHAFT SEAL | Dynamic seal for rotating output shaft |
| 0636302013 | SCREW PLUG | Drain/fill plug for output housing |
| 0501309567 | THERMOMETER | Monitors output section oil temperature |
| 4108338020 | ADAPTER | Converts output flange to different yoke |
| 4108111050 | POWER TAKE-OFF | Drives auxiliary hydraulic pumps |
