Standard Ignition AC537 Idle Air Control Valve
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Standard Ignition

Standard Ignition AC537 Idle Air Control Valve

Brand Standard Ignition AC537
Terminal Type Blade
Fits Honda · 6 vehicles

Idle air control valve. Regulates airflow to help maintain a steady idle.

Automatic type. Provides automatic air control for consistent engine operation.

Female connector. Features a 3-terminal male connection and two hose ports.

Cross-references Standard Ignition AC537, 2-16822 and 2H1393 for the same application. See all 8.

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Idle Air Control Valve for Honda Civic

Standard Ignition AC537 is an idle air control valve for select 2003-2005 Honda Civic applications. It is built with a female connector, 3 male terminals, and 2 hose connectors to match the original-style electrical and vacuum interface on the vehicle.

Key Features

  • Idle air control valve for fuel injection system service
  • Automatic air control valve type
  • Female connector with 3 male terminals
  • 2 hose connector ports for the specified application
  • Direct-fit replacement for select Honda Civic models
  • Standard Ignition AC537 part number for catalog matching

Application Details

Fits 2003-2005 Honda Civic, N/A. This part is listed for the primary application on those model years and is also referenced for the same Honda Civic fitment range in catalog data. Standard Ignition AC537 is a practical choice when servicing idle speed control on a 2003 Honda Civic, 2004 Honda Civic, or 2005 Honda Civic with the matching connector and hose configuration.

This part cross-references 16022PZA003 and AC4258 for the same application.

What It Helps Address

  • Unstable or fluctuating idle speed
  • Idle speed that is too high or too low
  • Stalling when the engine returns to idle
  • Idle control issues after throttle body or intake service
  • Driveability concerns related to air bypass control

Installation Notes and Tips

Verify connector gender, terminal count, and hose connection layout before installation. Clean the throttle body and adjacent air passages during service so the replacement idle air control valve can operate against a clear airflow path. Confirm the vehicle is a 2003-2005 Honda Civic application before ordering AC537.

Quality Assurance

Standard Ignition supplies replacement engine management components for service applications, and AC537 is cataloged to match the specified Honda Civic fitment and connection style.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2005HondaCivic1.3LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2005HondaCivic1.3LL4N/ACompatible with various car models.
2004HondaCivic1.3LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2004HondaCivic1.3LL4N/ACompatible with various car models.
2003HondaCivic1.3LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2003HondaCivic1.3LL4N/ACompatible with various car models.
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — AC5372-168222H139373-460616022PZA00350651AC4258AEC1097