Cosworth Early types Early types

| Type_ | Year_ | Block | Displacement | Mainly_For |
|---|---|---|---|---|
| Mk.XIII | 1963 | 116E | 1594 cc | Formula B , Lotus 22 , 23B , 23C |
| Mk.XIV | 1963 | 116E | 1498 cc | Lotus Mk.VII |
| Mk.XV | 1963 | 116E | 1594 cc | Lotus 26R, Lotus Cortina |
| Mk.XVI | 1963 | 116E | 1498 cc | Note |
| Mk.XVII | 1964 | 109E | 1098 cc | Formula Junior |
| MAE | 1965 | 109E | 997 cc | Formula 3 |