Overview
The ZF 4661.272.018 CLUTCH is a critical torque-transfer component engineered specifically for the WG 90 and WG 94 series transmissions. This OEM genuine part sits within the planetary gear set assembly, where it engages and disengages power flow between rotating elements to enable smooth gear shifts under heavy loads. As a direct replacement for the original factory component, the SKU 4661.272.018 ensures precise hydraulic actuation and consistent clamping force, directly influencing shift quality and overall driveline durability. When installed alongside the 4656183202 LOOSE PARTS kit and the 6073003014 CONTROL UNIT, this clutch restores full transmission performance in commercial vehicles and industrial machinery.
Symptoms of Failure
When the ZF 4661.272.018 clutch begins to wear, operators often notice specific performance degradation. Common failure indicators include:
- Delayed or harsh gear engagement – The clutch fails to grip promptly, causing a noticeable lag when shifting from neutral to drive or between forward gears.
- Torque converter shudder under load – Worn friction material produces a vibration or shudder during acceleration, especially at low RPM.
- Transmission fluid overheating – Slipping clutches generate excess heat, leading to elevated oil temperatures and potential damage to the 4661101033 HOUSING and 4661301096 HOUSING.
- Burning smell from transmission – Friction material breakdown produces a distinct acrid odor, often accompanied by dark, contaminated fluid.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4661.272.018 |
| OEM Reference | ZF 4661 272 018 |
| Material | Sintered bronze friction lining on steel core |
| Outer Diameter | 272 mm |
| Inner Diameter | 180 mm |
| Thickness (new) | 8.5 mm |
| Weight | 2.4 kg |
| Operating Pressure | 12–18 bar |
| Max Torque Capacity | 2,200 Nm |
| Temperature Range | -40°C to +120°C |
Compatibility
This clutch is designed for the ZF WG 90 and WG 94 series transmissions, which are widely used in heavy-duty trucks, buses, and off-highway equipment. It also fits select variants of the WG 180, WG 200, and WG 240 models where the same clutch pack dimensions are employed. Always verify the transmission serial number and consult the 0769123894 TYPE PLATE for exact model identification before installation. The clutch interfaces directly with the 0631306174 CYLINDRICAL PIN and requires proper sealing with the 0750100022 SCREW PLUG and 4660201008 SCREW PLUG to prevent fluid loss.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656183202 | LOOSE PARTS | Hardware kit for clutch assembly |
| 6073003014 | CONTROL UNIT | Hydraulic valve body for clutch actuation |
| 4661101033 | HOUSING | Main transmission case section |
| 4661301096 | HOUSING | Rear housing for clutch pack |
| 0631306174 | CYLINDRICAL PIN | Alignment pin for clutch pack |
| 0769123894 | TYPE PLATE | Identification plate for transmission |
| 0750100022 | SCREW PLUG | Oil drain plug M22x1.5 |
| 4660201008 | SCREW PLUG | Pressure port plug |
| 0636100117 | SCREW PLUG | Fill plug with magnet |
| 0501211384 | VALVE | Modulating valve for clutch pressure |
