HomeStandard Ignition AC520 Idle Air Control Valve
Part #: AC520

Standard Ignition AC520 Idle Air Control Valve

13 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, Miata
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Reliable Idle Air Control Valve for Mazda Miata

The Standard Ignition AC520 Idle Air Control Valve is designed specifically for Mazda Miata models, ensuring precise control of engine idle speed. This component helps maintain smooth engine performance during idle conditions.

  • Compatible with Mazda Miata vehicles
  • Part number AC520 for accurate identification
  • Controls airflow to regulate engine idle speed
  • Direct replacement for factory idle air control valves
  • Durable construction for consistent operation

Product Overview and Functionality

The Standard Ignition AC520 Idle Air Control Valve is an essential part of the fuel injection system, responsible for managing the amount of air bypassing the throttle plate during engine idle. By adjusting airflow, it helps maintain stable engine RPMs under varying conditions such as temperature changes and accessory loads. This valve is engineered to meet OEM specifications, providing reliable performance for Mazda Miata owners.

Common Applications and Problem Resolution

  • Resolves rough or unstable idle issues in Mazda Miata
  • Eliminates engine stalling during idle
  • Improves cold start idle performance
  • Corrects idle surging or fluctuating RPMs
  • Supports smooth engine operation when accessories are engaged

Installation Notes and Tips

  • Ensure engine is cool before installation to avoid injury
  • Disconnect the battery to prevent electrical shorts
  • Remove the old idle air control valve carefully to avoid damaging the throttle body
  • Clean the mounting surface before installing the new valve
  • Reconnect electrical connectors securely and verify proper fitment

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM standards, providing dependable performance for your Mazda Miata. The AC520 Idle Air Control Valve undergoes rigorous quality control testing to ensure durability and functionality. Warranty coverage details are available through Standard Ignition and typically include protection against defects in materials and workmanship.

BrandStandard Ignition
Part NumberAC520
Connector ShapeRectangular
Gaskets IncludedYes
Hardware IncludedNo

This part fits 13 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005MazdaMiataN/APrimary application for specific vehicle models ~ Idle Air Control Valve
2005MazdaMiata1.8LL4N/ACompatible with various car models.
2004MazdaMiataN/APrimary application for specific vehicle models ~ Idle Air Control Valve
2004MazdaMiata1.8LL4N/ACompatible with various car models.
2003MazdaMiataN/APrimary application for specific vehicle models ~ Idle Air Control Valve
2003MazdaMiata1.8LL4N/ACompatible with various car models.
2002MazdaMiataN/APrimary application for specific vehicle models ~ Idle Air Control Valve
2002MazdaMiata1.8LL4N/ACompatible with various car models.
2001MazdaMiataN/APrimary application for specific vehicle models ~ Idle Air Control Valve
2001MazdaMiata1.8LL4N/ACompatible with various car models.
2000MazdaMiataN/APrimary application for specific vehicle models ~ Idle Air Control Valve
2000MazdaMiata1.8LL4N/ACompatible with various car models.
1999MazdaMiataN/APrimary application for specific vehicle models ~ Idle Air Control Valve

* 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:

2-168052H11825063473-4490AC4120BP4W20660V32-77-0004

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