Overview
The ZF 4661.272.014 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 clutch pack assembly, directly managing power flow between the engine and the drivetrain by engaging and disengaging planetary gear sets. As a wear-sensitive element, the 4661.272.014 clutch ensures smooth shifting under heavy loads. It is often replaced in conjunction with the 4661101024: TRANSMISSION HOUSING and the 4661301054: HOUSING II, which provide the structural envelope for this assembly. The SKU 4661.272.014 is laser-etched on the hub for immediate verification during rebuilds.
Symptoms of Failure
- Delayed or harsh engagement: When the clutch friction material degrades, you may notice a pronounced lag or a jarring shift when moving from neutral to drive, especially under load.
- Transmission oil overheating: A slipping 4661.272.014 clutch generates excessive heat due to constant friction, causing the transmission fluid to darken and burn, often accompanied by a distinct odor.
- Intermittent gear slippage: The transmission may momentarily lose power delivery in higher gears, with the engine revving without proportional vehicle speed increase, indicating the clutch is failing to hold torque.
- Metallic debris in the oil pan: Worn clutch plates shed fine metallic particles that accumulate in the sump, often visible during routine oil changes or when inspecting the 0631306174: CYLINDRICAL PIN alignment.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4661.272.014 |
| OEM Reference | ZF 4661 272 014 |
| Material | Sintered bronze friction lining on steel core |
| Outer Diameter | 272 mm |
| Inner Diameter | 180 mm |
| Thickness (New) | 4.2 mm |
| Weight | 1.85 kg |
| Spline Count | 36 internal splines |
Compatibility
This clutch is designed for the ZF WG 90 and WG 94 transmission families, which are widely used in medium-duty trucks, buses, and off-highway equipment. It is also compatible with the WG 180 and WG 200 series when used in specific clutch pack configurations. The 4661.272.014 interfaces directly with the 0769123894: TYPE PLATE for identification purposes. Always verify the clutch stack height against your transmission’s service manual, as variations exist between the WG 94 and WG 200 models.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101024 | TRANSMISSION HOUSING | Encloses the clutch pack and gear train |
| 4661301054 | HOUSING II | Intermediate housing supporting the clutch drum |
| 0631306174 | CYLINDRICAL PIN | Aligns housing components during assembly |
| 0769123894 | TYPE PLATE | Identification tag for transmission model |
| 0750100022 | SCREW PLUG | Seals oil passages in the valve body |
| 4660201008 | SCREW PLUG | Closes pressure test ports |
| 0636100117 | SCREW PLUG | Secures the clutch piston bore |
| 0501211384 | VALVE | Regulates hydraulic pressure to the clutch |
| 0732042156 | COMPRESSION SPRING | Returns the clutch piston to neutral |
| 0768409154 | SCREW PLUG | Seals the clutch drum drain port |
