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A mass airflow sensor is used to determine the mass of air entering an electronically fuel-injected engine. The air mass information is necessary for the engine control unit (ECU) to calculate and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the ambient temperature and altitude, and this is an ideal application for a mass sensorFits:Porsche 924S 1986-88 2.5LPorsche 944 1982-85 2.5LPorsche 9442 1985-88 2.5LPorsche 9442 1988-89 2.7L(Does not fit 944S/S2 or 944 Turbo)This item is sold on an exchange basis.
