Plenum Chamber, Cold Start Injector, Overrun Valve & Air Valve
| Fuel Injection Plenum Chamber | |
| Plenum Chamber, Corniche & Continental, chassis numbers 05037-16968 | |
| Plenum Chamber, Silver Spirit & Mulsanne, chassis numbers 01517-05272 | |
| Plenum Chamber, Silver Spirit & Mulsanne, chassis numbers 05273-16930 | |
| Plenum Chamber, Silver Spur, chassis numbers 01540-05195 | |
| Plenum Chamber, Silver Spur, chassis numbers 05196-16970 | |