Overview
The ZF 4660.272.015 COUPLING is a critical driveline component engineered specifically for the WG 92 and WG 98 transmission series. This OEM genuine part serves as the primary torque-transfer interface between the engine output and the transmission input shaft, ensuring smooth power delivery and torsional vibration dampening. Located within the bell housing assembly, the coupling directly interfaces with the 4660101017: TRANSMISSION HOUSING and the 4660301054: HOUSING II to maintain precise alignment. The SKU 4660.272.015 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn units in heavy-duty industrial applications.
Symptoms of Failure
- Torque converter shudder or vibration during acceleration: When the coupling wears, it loses its ability to dampen harmonics, causing noticeable driveline shudder at low RPM.
- Transmission oil leaks near the bell housing: A degraded coupling seal can allow ATF to escape, often seen as drips between the engine and transmission.
- Delayed or harsh engagement when shifting from Park to Drive: Worn splines or elastomeric elements in the coupling cause a lag in power transfer, resulting in a jarring shift feel.
- Metallic grinding or clunking noises from the transmission front: As the coupling’s internal splines wear, metal-on-metal contact produces audible noise during load changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4660.272.015 |
| OEM Reference | ZF 4660.272.015 |
| Material | High-strength alloy steel with elastomeric dampener |
| Outer Diameter | 210 mm (estimated) |
| Overall Length | 95 mm (estimated) |
| Weight | 3.2 kg (estimated) |
| Spline Count | 24-tooth internal spline (estimated) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This coupling is designed for the ZF WG 98 Series transmissions, including the WG180, WG200, and WG210 models. It is also backward-compatible with the WG 92 Series (WG120, WG150) when used with the appropriate 0631306174: CYLINDRICAL PIN for alignment. For proper identification, always verify the 0769123894: TYPE PLATE on your transmission housing to confirm the exact series and build date. The coupling is not compatible with ZF Ecomat or Ecolife series without significant adapter modifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101017 | TRANSMISSION HOUSING | Main structural casing for gear train and shafts |
| 4660301054 | HOUSING II | Intermediate housing supporting the coupling and pump |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise housing-to-housing fit |
| 0769123894 | TYPE PLATE | Identification plate with transmission serial and model |
| 0750100022 | SCREW PLUG | Seals oil passages and inspection ports |
| 4660221029 | SUCTION TUBE | Oil pickup tube from pan to pump |
| 0634100317 | O-RING | Static seal for housing joint faces |
| 0636103273 | CAP SCREW | Fastener for coupling retention |
| 0634306311 | O-RING | Dynamic seal for rotating shaft interface |
| 4660321029 | FIXING PLATE | Locks coupling to input shaft |
