Standard Motor Products AS349 Manifold Absolute Pressure MAP Sensor

The Standard Motor Products AS349 is a direct-fit, high-quality replacement manifold absolute pressure (MAP) sensor designed to restore accurate engine performance monitoring. This sensor plays a critical role in the engine management system by converting manifold pressure and vacuum signals into electrical data that the powertrain control module (PCM) uses to optimize fuel delivery, ignition timing, and engine load calculations.

Key Features:

• Precision-engineered to provide instantaneous manifold pressure data to the engine control unit
• High-grade materials designed to withstand extreme temperature changes and harsh underhood conditions
• Features 4 terminals and 1 vacuum port for proper integration with vehicle emissions systems
• Includes O-rings for proper sealing (wiring harness not included)
• 100% in-line and end-of-line inspection ensures quality and reliability
• Designed and manufactured in North America to meet or exceed OE specifications

Function: On engines with speed-density fuel injection systems, the MAP sensor helps the PCM estimate airflow by measuring manifold pressure changes as engine load varies. This data allows the computer to advance or retard ignition timing as needed and maintain optimal air-fuel ratios. A malfunctioning MAP sensor can cause intermittent check engine lights, hesitation during acceleration, elevated emissions, and poor overall engine performance.

OEM Cross-Reference Numbers: Replaces Chrysler/Mopar 5139278AA, 5093103AA, 5093104AA, 3971106, 3949988