Overview
The ZF 4660.273.024 COUPLING is a critical driveline component engineered specifically for the WG 92 and WG 98 transmission series. This OEM genuine part functions as the primary torque-transfer interface between the engine output and the transmission input shaft, ensuring smooth power delivery under heavy-duty operating conditions. The SKU 4660.273.024 is precision-machined to maintain concentric alignment and dampen torsional vibrations, which protects downstream components such as the 4660101017: TRANSMISSION HOUSING from excessive stress. Without this coupling, the transmission cannot engage properly, making it a non-negotiable element for any rebuild or overhaul of the WG 98 series.
Symptoms of Failure
- Torque converter shudder or vibration at low speeds: A worn 4660.273.024 coupling will cause noticeable shuddering during acceleration from a stop, often misdiagnosed as a torque converter issue.
- Metallic grinding noise from the bell housing area: As the coupling splines wear, you will hear a distinct grinding or clicking sound, especially when shifting between forward and reverse gears.
- Transmission fluid contamination with metallic particles: Degradation of the coupling surface releases fine metal shavings into the oil, which can be detected during routine fluid analysis and may clog the 4660221029: SUCTION TUBE.
- Intermittent gear engagement failure: When the coupling loses its dimensional integrity, the transmission may fail to engage gears consistently, leading to sudden loss of drive power.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4660.273.024 |
| Material | High-strength alloy steel, heat-treated |
| Outer Diameter | 198 mm |
| Inner Diameter (Spline) | 42 mm |
| Overall Length | 85 mm |
| Weight | 2.4 kg |
| OEM Reference | ZF 4660.273.024 |
| Torque Capacity | 2,800 Nm (estimated) |
Compatibility
This coupling is designed for the ZF WG 92 and WG 98 transmission families. It is directly compatible with models including WG180, WG200, and WG210. The part also integrates with the 4660301054: HOUSING II and requires proper alignment using the 0631306174: CYLINDRICAL PIN during installation. For identification purposes, always verify the 0769123894: TYPE PLATE on your transmission to confirm model specifics before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101017 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4660301054 | HOUSING II | Secondary housing for clutch assembly |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise assembly |
| 0769123894 | TYPE PLATE | Identification plate with model data |
| 0750100022 | SCREW PLUG | Seals fluid passages in the housing |
| 4660221029 | SUCTION TUBE | Oil pickup tube for lubrication circuit |
| 0634100317 | O-RING | Static seal for fluid joints |
| 0636103273 | CAP SCREW | Fastener for coupling retention |
| 0634306311 | O-RING | Secondary seal for high-pressure zones |
| 4660321029 | FIXING PLATE | Locks coupling to input shaft |
