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You are Purchasing ONEÂ You are Purchasing ONEÂ Â Barometric Pressure 2 BAR Sensor For GM 213-1631 MAP Manifold Absolute PressureFits GM Vehicles BelowInterchange Part Numbers: 12615136, 213-1631, 12580698, 09350899, 2131631, 2131155, 9350899, 5S1187, 22034, SU1477â—Â The pressure inside your intake manifold is extremely important input to the ECU. A quality MAP sensor is crucial to your engines performance. These sensors will respond to changes in manifold pressures and relay the information to t