Bosch Bosch has been the worldwide leader in innovation fuel injector technology and design. Use only OEM Infiniti Fuel Injectors from Bosch when replacing the injectors. Replace all injectors at the same time to avoid compatibility issues.
Hitachi Hitachi makes several varieties of Infiniti MPI (multipoint injection) and SPI (single point injection) gasoline injectors. The Infiniti direct injector is used to directly inject gasoline into the engine combustion cylinder. Currently, most Infiniti injection systems use an MPI (multipoint injector) scheme which injects fuel to the intake manifold part ahead of the intake valve and combustion cylinder.
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