Thermostat Aug 2000 - Apr 2002, 3.5L, V6, 24V, DOHC, MPFI, E50, 178kW, EngCode: VQ35DE, Import. Thermostat 2007 - 2002, 3.5L, V6, 24V, DOHC, MPFI, E51, 178kW, EngCode: VQ35DE, Import. Thermostat May 1984 - May 1986, 3.0L, V6, 12V, SOHC, EFI, EngCode: VG30E.