Airtex 5S2439 Manifold Absolute Pressure MAP Sensor

The Airtex 5S2439 is a direct-fit Manifold Absolute Pressure (MAP) sensor engineered to restore accurate engine management performance. The MAP sensor monitors intake manifold vacuum and pressure, sending real-time voltage signals to the engine control module (ECM) so it can calculate the correct air/fuel mixture and ignition timing for optimal combustion efficiency.

Airtex manufactures this sensor to meet or exceed original equipment specifications, ensuring a reliable, plug-and-play replacement with no programming or modification required. Proper MAP sensor function is critical — a faulty sensor can trigger diagnostic trouble codes (DTCs), cause rough idle, poor acceleration, increased fuel consumption, and failed emissions tests.

Key Features:

• Direct OE replacement — matches original fit, form, and function
• Manufactured to meet or exceed OEM specifications for accurate pressure readings
• Delivers precise voltage output signals to the ECM for proper air/fuel ratio control
• Plug-and-play installation with no reprogramming required
• Helps resolve rough idle, hesitation, poor fuel economy, and MAP-related DTCs
• Built for long-term durability in demanding underhood environments

The Airtex 5S2439 MAP sensor is a trusted aftermarket solution for restoring proper engine management function, backed by Airtex Automotive Division's reputation as a leading supplier of engine management and fuel system components.