Overview
The ZF 4143.152.404 COUPLING is a critical torque-transfer component engineered for the HL 100 and HL 270 series transmissions. This OEM genuine part sits directly between the engine flywheel and the transmission input shaft, acting as a flexible connector that dampens torsional vibrations while ensuring precise power delivery. Designed to withstand high cyclic loads in industrial drivetrains, the SKU 4143.152.404 maintains alignment integrity under extreme operating conditions. When paired with the 4143101014 HOUSING and 4143301025 HOUSING, this coupling forms the backbone of the transmission’s input assembly.
Symptoms of Failure
- Torque fluctuation under load – Worn coupling teeth cause irregular power transfer, noticeable as surging or hesitation during acceleration.
- Metallic grinding noise at idle – Deteriorated elastomeric elements produce a distinct rattling sound, especially when the transmission is in neutral.
- Oil seepage near the bell housing – A failing coupling can compromise the 0634313603 O-RING, leading to fluid migration past the seal interface.
- Vibration through the shift lever – Excessive play in the coupling hub translates into perceptible shuddering during gear changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Outer Diameter | 152 mm |
| Inner Bore Diameter | 40 mm |
| Overall Length | 85 mm |
| Material | Heat-treated alloy steel / Nitrile rubber |
| Weight | 1.85 kg |
| OEM Reference | ZF 4143.152.404 |
| Torque Capacity | 1,200 Nm (peak) |
| Operating Temperature | -30°C to +120°C |
Compatibility
This coupling is designed for ZF HL 100 and HL 270 series transmissions, commonly found in heavy-duty construction and agricultural machinery. It also fits select WG180 and WG200 models where the input shaft configuration matches the 40 mm bore. For proper sealing, always replace the 4475280018 SCREW PLUG and inspect the 0501342341 SUPPORT RING during installation. Cross-reference with your transmission’s serial number to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101014 | HOUSING | Encloses the coupling assembly |
| 4143301025 | HOUSING | Secondary housing for input shaft support |
| 0634313603 | O-RING | Seals the coupling-to-housing interface |
| 4475280018 | SCREW PLUG | Locks the coupling hub in position |
| 0501342341 | SUPPORT RING | Prevents axial displacement of the coupling |
| 4143298457 | SEAL KIT | Contains all necessary gaskets for rebuild |
| 0634313591 | O-RING | Secondary seal for the input shaft bore |
| 0636101068 | CAP SCREW | Fastens the coupling to the flywheel |
| 4143221014 | THROTTLE VALVE | Controls hydraulic pressure to the coupling |
| 0634313164 | O-RING | Seals the throttle valve housing |
