Marussia are expecting to change engine partners at the end of this season as current supplier Cosworth "won't" be making V6 engines.
Next season Formula One brings in a new era with today's 2.4 litre V8s making way for 1.6 litre turbocharged V6 engines.
For Marussia, though, the change not only means a new specification engine but also a new engine partner as sporting director Graeme Lowdon revealed that Cosworth won't be supplying F1 teams next season.
"My understanding is that Cosworth won't be making a 2014 engine," Lowdon said during the FOTA Fans' Forum in Barcelona.
"Obviously I don't work for Cosworth, but that is my understanding. The three suppliers will be Mercedes, Renault and Ferrari."