Red Bull chooses McLaren affiliate to supply alternator 8 May, 2013 Christian Horner with Martin Whitmarsh After dumping Magneti Marelli Red Bull’s new alternator supplier is an affiliate of their arch rival McLaren, according to Auto Motor und Sport. We reported last week that, after being dogged by recurring reliability faults with its Magneti Marelli units last year, Red Bull had instructed engine supplier Renault to seek a new supplier. Italian reports identified that new supplier as ‘Tag’. It seems those reports were actually referring to Techniques d’Avant Garde, or TAG – the well-known McLaren-affiliated company. The Auto Motor und Sport headline reads: “Red Bull reliable, thanks to McLaren”. The report said Renault confirmed the news, insisting that – no matter the supplier of components – Red Bull’s French engine supplier remains responsible for the adaptation and installation of the alternator.