Idler pulley Oct 2004 - Oct 2007, 2.4L, V6, 24V, DOHC, MPFI, C6, 130kW, EngCode: BDW. Idler pulley Jun 2005 - Feb 2009, 3.2L, V6, 24V, DOHC, MPFI, C6, 188kW, EngCode: AUK. Idler pulley Jun 2005 - Feb 2009, 3.2L, V6, 24V, DOHC, MPFI, C6, 188kW, EngCode: BKH.