EF7+ oil pump is the first full variable pump with solenoid valve located in the EF7 oil pan. This oil pump was designed in the R&D department of this company. For efficient engine lubrication and reduction of fuel consumption, the variable oil pump can supply exactly the right amount of oil in all situations and it minimizes the torque absorption in non-critical operating points. Also, this oil pump can feed back high-pressure oil (main gallery) into suction area in order to prevent cavitation phenomenon.