Cosworth co-founder Keith Duckworth, whose company built the most successful engine in F1 history, has died aged 72.
The V8 Cosworth DFV engine won on its debut on the 1967 Dutch Grand Prix with Jim Clark's Lotus and dominated the sport for 15 years with 155 race wins.
It powered Jackie Stewart, Emerson Fittipaldi, James Hunt and Nelson Piquet to world titles.
"Keith was a true innovator and a genuine legend in his lifetime," said the Northampton company in a statement.
"His name will live on as an integral part of both the Cosworth name and culture."