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Your cart is empty.An ACDelco GM Original Equipment Manifold Absolute Pressure (MAP) Sensor measures the intake manifold pressure, and is a GM-recommended replacement for your vehicle’s original component. The MAP sensor is a part of the fuel and engine management system. Its signal is used by the engine control module along with the throttle position sensor to calculate the amount of air entering the engine so that the correct amount of fuel is injected for optimum combustion. This original equipment manifold absolute pressure sensor has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Stéphane Godbout
Reviewed in Canada on July 9, 2024
Fonctionne A1
Darkning
Reviewed in the United States on February 6, 2024
I bought this to add to my 1993 FD RX-7. I was using a GM 3 bar and wanted something with a little more capacity for future boost levels. I didn't find any of the calibrations posted here to be particularly accurate for me, so I rigged up a way to measure and calibrate the sensor in the ECU with an air compressor, digital tire pressure meter(as a comparison) and the internal 3BAR sensor on the Haltech ECU to verify the data. I've attached the pic of the break points that I could measure for anyone else attempting the same!Analog voltage an an AVI input with pull up set to disable in my case.The sensor works great, reads quickly and has been reliable for me so far. Can't complain about the price either!
Boo
Reviewed in Canada on November 12, 2024
It will not fit, I ordered the wrong one. My fault, the product isgm original part.
Leonardo
Reviewed in the United States on January 17, 2024
My 2.0 turbo charged Malibu lost a lot of horsepower. After changing out a bad spark plug coil it was running better but not like it was when it was a new car. After changing out this sensor my car felt like new again. I gained all of my missing horsepower.
Michael Case
Reviewed in the United States on March 20, 2022
I received gm part number 25203477, not part number 12643955 as advertised. It looks like part number 12643955 has been replaced by part number 25203477. It should function just fine since they are both 4bar map sensors. Just a heads up.
Mark Palleschi
Reviewed in the United States on October 4, 2022
Great oem 4 bar sensors that can be used with standalone ecms
Andrew W Bell
Reviewed in the United States on March 27, 2020
Not much run time on the sensor, but seems to work fine. This is a 3.5 bar sensor, not a 4 bar. 0v = -19.7kPa, 5v = 394.8kPa. I'd include my calibration data, but I can't figure out how to attach an image.
Problem Child
Reviewed in the United States on February 23, 2020
Works great with Holley Terminator X stand-alone ECU, OEM quality and function.
Mark Richmond
Reviewed in the United States on December 24, 2020
Works great on my MS3 Goldbox using the settings others have posted. I had an EFI source 3 bar but it failed after a year. These sensors are a much better deal
Ricardo S.
Reviewed in Mexico on September 7, 2019
Buen producto, funcionó perfectamente.
Lloyd
Reviewed in Canada on February 7, 2018
Great and fast!
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