Idler Pulley Sep 2005 - Aug 2008, 2.5L, V6, 24V, DOHC VVT, MPFI, CL203, 150kW, EngCode: M272.920. Idler Pulley Jan 2007 - Jan 2014, 2.5L, V6, 24V, DOHC VVT, MPFI, W204, 150kW, EngCode: M272.921. Idler Pulley Jan 2005 - Aug 2007, 3.0L, V6, 24V, DOHC VVT, MPFI, W203, EngCode: M272.940.