Standard Ignition AC545 Idle Air Control Valve

Idle Air Control Valve for Mazda 626 and Millenia

Standard Ignition AC545 is an idle air control valve for select Mazda fuel injection systems. It is built with a rectangular connector, two ports, and two terminals, and it includes a gasket for service replacement on the listed applications.

Key Features

• Idle air control valve for fuel injection system service
• Rectangular connector shape for the specified vehicle applications
• 2-port, 2-terminal design
• Gaskets included for installation on the matching intake setup
• Standard Ignition AC545 replacement part number

Detailed Description

Standard Ignition AC545 is a direct-fit idle air control valve for select 1998-2002 Mazda 626 and 2001-2002 Mazda Millenia applications. It regulates bypass air at idle to help maintain stable engine speed when the throttle is closed, especially during cold starts, accessory load changes, and stop-and-go driving. If you are searching for an idle air control valve for a Mazda 626 or Mazda Millenia, AC545 provides the specified connector, port, and terminal configuration for the listed fitments.

This part cross-references AEC1124 and 50659 for the same application.

What It Helps Address

• Unstable or fluctuating idle speed
• Stalling when coming to a stop
• Idle speed that is too high or too low
• Hard starting related to idle air control issues
• Idle quality problems after throttle body or intake service

Installation Notes and Tips

Verify the connector shape, port count, and terminal count before installation. Clean the throttle body and mating surfaces, then install the included gasket to help seal the valve to the intake assembly. Confirm the vehicle application by year and model before ordering, especially for 1998-2002 Mazda 626 and 2001-2002 Mazda Millenia fitments.

Quality Assurance

Standard Ignition supplies replacement ignition and fuel system components for service applications. AC545 is built to match the listed fitment and connection requirements for the specified Mazda vehicles.