MAP Sensor
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Beck/Arnley MAP Sensor

Part No. 158-0521 Warranty Details  
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Mounted on or connected to the intake manifold to monitor intake vacuum. Calculates air density and determines the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion. Measures engine load so ignition timing can be advanced and retarded as needed. Recovers proper fuel economy, engine power, and proper idle.
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O.E.M. Replacement:Yes
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