Air Pressure Transducer, Fuel Cut Off Switch & Vacuum Dump Valve
| Air Pressure Transducer & Fuel Cut Off Switch, Silver Spirit, Silver Spur, Bentley Eight & Mulsanne S, chassis numbers 44001-46781
| Fuel Cut Off Switch, Silver Spirit, Silver Spur, Bentley Eight & Mulsanne S, chassis numbers 31001-36322
| Air Pressure Transducer & Fuel Cut Off Switch, Silver Spirit & Silver Spur, chassis numbers 54001-54602