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The maximum pressure in the system with it is 4.1 atm. At idle at 110 degrees 1.5, at 80-95 1.8-2.0 atm. I would not put it on 5S, ALFI PARTS - OP1012, 15100-74030 will do on 3S-FE. This oil pump from 5SFE can be used on 3S-FE instead of 15100-74050. Its gears are one and a half times thicker, and the performance is accordingly too. This will give more pressure in the oil system at idle