Standard Motor Products AS398 Manifold Absolute Pressure MAP Sensor

The Standard Motor Products AS398 is a high-quality replacement manifold absolute pressure (MAP) sensor designed to restore proper engine management system operation. This sensor accurately monitors intake manifold pressure and converts it to an electrical signal that the engine control unit uses for fuel delivery optimization and ignition timing control.

Key Features:

• 3-terminal design with male blade-type terminals and female plug-in connector
• Engineered for precision performance, durability, and long service life
• Direct OE-level replacement ensuring reliable fitment
• Includes O-rings for proper sealing during installation
• 100% in-line and end-of-line inspection during manufacturing
• Single vacuum port configuration

MAP sensors play a critical role in engine performance by measuring manifold pressure changes, which helps the PCM determine engine load for timing adjustments. On speed density fuel injection systems, the MAP sensor also assists in airflow estimation. A malfunctioning MAP sensor can cause check engine lights, hesitation during acceleration, elevated emissions, and poor overall engine performance.

Cross-Reference Numbers: 12592016, ECE1442, MA0206, SU9493, 5S8027, 227117, 721792, EC1880, 2251234, 2133843