MAP Sensor replacement part - Function The MAP sensor monitors manifold absolute pressure as part of the engine management system to help regulate fuel delivery and engine timing. - Symptoms and benefits If your vehicle shows check engine lights, excessive fuel consumption, engine hesitation or reduced performance, this MAP sensor can help address these issues by providing accurate pressure readings to the ECU. - Compatibility and part numbers Part Number: E1T26571A 18590-72F21 - Quality and durability Designed for good transmission performance, with solid wear and heat resistance and a long service life. - Why this matters Reliable MAP readings support proper air-fuel mixture and ignition timing, contributing to steady engine performance and efficiency over time. - Use scenarios 1) Diagnostic using MAP-related fault codes: Replace when the ECU indicates MAP sensor issues to restore correct readings. 2) Performance and efficiency improvement: Install to address symptoms of high fuel consumption or sluggish throttle response due to sensor drift. 3) Routine maintenance in vehicles with these part numbers: Maintain OEM-level performance and long-term reliability by replacing worn sensors as needed.