Walker 225-1312 Manifold Absolute Pressure Sensor

Walker 225-1312 MAP Sensor Overview

Walker 225-1312 is a Manifold Absolute Pressure (MAP) sensor built as an OE replacement for precise intake manifold pressure measurement. It sends pressure data to the ECM so fuel delivery and ignition timing can be adjusted for stable drivability, fuel efficiency, and emissions control.

Compatible with 2006-2009 Saab 9-3 and 2007-2008 Chevrolet Astra, this Sensor Only part is built around the connector and electrical requirements of the original application. The Walker Sensor Only line focuses on direct-fit sensor replacement for vehicles that need accurate engine management input without changing the surrounding system.

Key Features

• Manifold Absolute Pressure sensor for engine load calculation
• OE replacement design for electrical output, pressure range, and connector fit
• Black plastic body with oblong female connector
• 4 male terminals with spade terminal type
• Built for high engine bay temperatures, vibration, and intake air contaminants
• Walker 225-1312 application coverage for Saab 9-3 and Chevrolet Astra

Product Details

Walker Products engineers this MAP sensor to match OE specifications so the ECM receives accurate manifold pressure readings under changing throttle and load conditions. That data supports proper air-fuel control and ignition timing across gasoline and diesel engine management systems. The Walker 225-1312 is a direct replacement choice for drivers addressing sensor-related performance concerns on the Saab 9-3 or Chevrolet Astra.

This part cross-references Bosch 0261230042 and Delphi PS10124 for the same application.

Common Issues This Part Can Address

• Check engine light related to MAP sensor performance
• Rough idle or unstable engine speed
• Hesitation during acceleration
• Poor fuel economy from incorrect load readings
• Emissions performance issues tied to inaccurate manifold pressure data

Installation Notes

Verify connector shape, terminal count, and body style before installation. The black oblong female connector and 4-terminal layout should match the original sensor connection on the vehicle. Confirm the vehicle year and model against the listed fitment for 2006-2009 Saab 9-3 and 2007-2008 Chevrolet Astra.

Quality Assurance

Walker MAP sensors are tested for accuracy, responsiveness, and long-term reliability. Each unit is built to meet OE-level electrical and fitment requirements for dependable engine management performance.