HomeEmission Control > SensorsStandard Ignition AS323 Manifold Absolute Pressure Sensor
Part #: AS323

Standard Ignition AS323 Manifold Absolute Pressure Sensor

⚙️ 6 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Subaru, Outback and Impreza
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Overview of Standard Ignition AS323 Manifold Absolute Pressure Sensor

The Standard Ignition AS323 Manifold Absolute Pressure Sensor is designed specifically for Subaru Impreza and Outback models. This sensor plays a critical role in monitoring engine performance by measuring the manifold pressure, ensuring optimal fuel delivery and engine efficiency.

  • Compatible with Subaru Impreza and Outback vehicles
  • Accurate manifold pressure readings for engine control
  • Direct replacement part number AS323
  • Ensures proper air-fuel mixture for emission control
  • Durable construction for reliable long-term use

Detailed Product Description

The AS323 Manifold Absolute Pressure Sensor from Standard Ignition is engineered to provide precise pressure data to the engine control unit (ECU) in Subaru Impreza and Outback models. By accurately measuring the absolute pressure inside the intake manifold, this sensor helps regulate fuel injection and ignition timing. This ensures the engine runs efficiently and meets emission standards. The sensor is a direct fit replacement, matching OEM specifications to maintain vehicle performance and reliability.

Common Applications and Issues Addressed

  • Helps resolve rough idling and engine stalling
  • Improves fuel economy by optimizing air-fuel ratio
  • Reduces engine hesitation and poor acceleration
  • Prevents check engine light triggers related to manifold pressure
  • Supports emission control system functionality

Installation Notes and Tips

Installation of the Standard Ignition AS323 sensor is straightforward for Subaru Impreza and Outback owners familiar with basic engine maintenance. Ensure the engine is cool before removal. Disconnect the battery to avoid electrical issues. Remove the old sensor carefully to avoid damaging the intake manifold. Install the new sensor securely and reconnect all electrical connectors. After installation, clear any diagnostic trouble codes and verify sensor operation with a scan tool.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The AS323 Manifold Absolute Pressure Sensor undergoes rigorous quality control testing. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship to provide confidence in your purchase.

BrandStandard Ignition
Part NumberAS323
Connector GenderFemale
Connector TypePlug In
Terminal GenderMale
Terminal TypeBlade

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2004SubaruOutback3.0LH6N/A
2003SubaruOutback3.0LH6N/A
2002SubaruOutback3.0LH6N/A
2001SubaruImpreza2.2LH4N/A
2001SubaruOutback3.0LH6N/A
2000SubaruImpreza2.2LH4N/AFrom 9/1/99

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

158-14012-2033322627AA1305S250272-162574309EC1805ECA2269MAPA104

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.