 The subsequent engine (in various versions) was the mainstay powerplant of Jaguar, used in the XK 120, Mk VII Saloon, Mk I and II Saloons and XK 140 and 150.It was also employed in the E Type, itself a development from the race winning and Le Mans conquering C and D Type Sports Racing cars refined as the short-lived XKSS, a road-legal D-Type.Few engine types have demonstrated such ubiquity and longevity