Product Description
| Feature | Specification |
| Primary Part Number | MOTORCRAFT CX-240 |
| OEM Part Number | D8BZ-9D473-A (Ford/Motorcraft) |
| Function | Ported Vacuum Switch (PVS) (A temperature-sensitive valve that opens/closes or switches vacuum ports based on coolant temperature) |
| Voltage | Not applicable (Mechanical/Temperature controlled) |
| Ports | 3 Ports (Typically one source and two outputs, controlling vacuum lines) |
| Thread Size | Proprietary thread for mounting into the thermostat housing or intake manifold |
| Construction | Metal Threaded Base with Plastic/Nylon Vacuum Ports |
| Typical Use | Original Equipment (OE) component used to control the vacuum signal to the EGR valve or Thermactor (Smog Pump) system. |
| Vehicle/Truck | Years | Engine Type | Notes |
| Ford Fairmont | 1978 - 1980 | Various Engines (I6 and Small V8) | Confirmed OEM fitment. |
| Mercury Zephyr | 1978 - 1980 | Various Engines (I6 and Small V8) | Mercury equivalent to the Ford Fairmont. |
| Ford Mustang | 1979 - 1980 | Various Engines (I4, I6, V8) | Used on the new Fox Body platform for emissions control. |
| Mercury Capri | 1979 - 1980 | Various Engines (I4, I6, V8) | Mercury equivalent to the Mustang. |
| Ford Passenger Cars | 1978 - 1980 | Various Engines | Used in other Ford sedans and coupes of this era using the same thermostat housing design. |
