Overview
The ZF 4143.102.417 INPUT is a critical OEM genuine component engineered for the HL 100 and HL 270 series transmissions. This part serves as the primary input shaft assembly, transferring torque from the engine directly into the transmission’s planetary gear set. Designed to withstand high rotational loads and thermal stress, the SKU 4143.102.417 ensures precise engagement and smooth power delivery. When installed, it interfaces directly with the 4143101009 HOUSING and the 4143301025 HOUSING, forming the core of the driveline assembly. Without this genuine input shaft, the transmission cannot initiate gear shifts or maintain consistent output under load.
Symptoms of Failure
- Oil leaks near the input seal: A worn 4143.102.417 shaft can damage the sealing surface, causing transmission fluid to escape around the bell housing. This often appears as drips after extended operation.
- Gear slipping under acceleration: When the input shaft splines wear, the clutch pack fails to engage fully, resulting in delayed or erratic gear engagement—especially noticeable in HL 270 series units.
- Vibration or whining noise: Bearing wear on the input shaft produces a distinct metallic whine that increases with RPM. This symptom often precedes catastrophic failure if ignored.
- Hard shifting or no forward motion: A fractured input shaft prevents torque transfer entirely, leaving the vehicle immobile despite the engine running.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4143.102.417 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 312 mm (estimated) |
| Shaft Diameter | 45 mm (bearing journal) |
| Spline Count | 21-tooth involute spline |
| Weight | 2.8 kg (6.2 lbs) |
| OEM Reference | ZF 4143.102.417 |
| Sealing Components | Requires 0634313603 O-RING and 4475280018 SCREW PLUG |
Compatibility
This genuine ZF input shaft is designed for the HL 100 and HL 270 series transmissions, which are commonly found in industrial forklifts, telehandlers, and heavy-duty material handling equipment. Based on its spline configuration and housing interface, the 4143.102.417 also fits select WG180 and WG200 models when paired with the correct 0501342341 SUPPORT RING. Always verify housing compatibility using the 4143298457 SEAL KIT to ensure proper sealing. For throttle control applications, the 4143221013 THROTTLE VALVE is a common companion part in these assemblies.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Encloses the input shaft and bearing assembly |
| 4143301025 | HOUSING | Secondary housing for clutch pack support |
| 0634313603 | O-RING | Seals the input shaft bore against fluid leaks |
| 4475280018 | SCREW PLUG | Closes oil passages in the housing |
| 0501342341 | SUPPORT RING | Provides axial support for the input shaft |
| 4143298457 | SEAL KIT | Complete set of seals for input shaft replacement |
| 0634313591 | O-RING | Secondary seal for the housing joint |
| 0636101068 | CAP SCREW | Fastens the input shaft retaining plate |
| 4143221013 | THROTTLE VALVE | Controls hydraulic pressure for shift modulation |
| 0634304484 | O-RING | Seals the throttle valve bore |
