Standard Ignition AC526 Idle Air Control Valve

Brand Standard Ignition AC526
Connector Shape Rectangular
Gaskets Included Yes
Hardware Included No
Fits Toyota · 22 vehicles

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

Rectangular connector. Designed for a straightforward electrical connection.

Gaskets included. Helps simplify installation with sealing parts on hand.

Cross-references Beck/Arnley 159-1028, Bremi 50640 and HOLSTEIN 2IAC0328 for the same application. See all 11.

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Idle Air Control Valve for Toyota Tacoma and 4Runner

Standard Ignition AC526 is an idle air control valve for select Toyota applications that need stable idle speed management. It features a rectangular connector shape, 3 terminals, 2 hose connectors, and includes gaskets for a cleaner replacement on the vehicle.

Key Features

  • Idle Air Control Valve for air and fuel delivery system service
  • Rectangular connector shape with 3 terminals
  • 2 hose connectors for the specified application
  • Gaskets included for installation sealing
  • Direct-fit replacement for select Toyota Tacoma and Toyota 4Runner models
  • Standard Ignition AC526 replacement part number

Detailed Description

Standard Ignition AC526 is built for select Toyota Tacoma and Toyota 4Runner idle speed control applications, including 2000 Toyota 4Runner with California emissions and auxiliary air valve notes, plus 2000 Toyota Tacoma with California emissions and auxiliary air valve notes. It also fits 2001-2004 Toyota Tacoma applications listed for this part. This idle air control valve helps regulate bypass air at idle so the engine can maintain a steady idle under changing load conditions. The AC526 part number is also referenced in aftermarket cross listings for the same application.

This part cross-references Beck/Arnley 159-1028 for the same application.

What It Is Used For

  • Correcting unstable or fluctuating idle speed
  • Addressing stalling when the engine returns to idle
  • Restoring idle control after throttle body or air control wear
  • Replacing a valve affected by carbon buildup or electrical failure
  • Servicing Toyota Tacoma and Toyota 4Runner idle air control systems

Installation Notes and Tips

Verify the connector shape, terminal count, and hose connection layout before installation. Use the included gaskets to help maintain a proper seal, and confirm the vehicle’s emissions configuration and application notes match the listed fitment for your Toyota Tacoma or Toyota 4Runner. Standard Ignition AC526 should be matched to the exact engine and emissions setup shown in the fitment data.

Quality Assurance

Standard Ignition supplies replacement ignition and engine management components for service applications. This part is listed with OE-style interchange references for the specified Toyota fitments, including AC526.

This part fits 22 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersPositionNotes
2004ToyotaTacoma2.7LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2004ToyotaTacoma2.4LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2004ToyotaTacoma2.4LL4N/ACompatible with various car models.
2004ToyotaTacoma2.7LL4N/ACompatible with various car models.
2003ToyotaTacoma2.4LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2003ToyotaTacoma2.7LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2003ToyotaTacoma2.4LL4N/ACompatible with various car models.
2003ToyotaTacoma2.7LL4N/ACompatible with various car models.
2002ToyotaTacoma2.4LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2002ToyotaTacoma2.7LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2002ToyotaTacoma2.4LL4N/ACompatible with various car models.
2002ToyotaTacoma2.7LL4N/ACompatible with various car models.
2001ToyotaTacoma2.4LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2001ToyotaTacoma2.7LL4N/APrimary application for specific vehicle models ~ Idle Air Control Valve
2001ToyotaTacoma2.4LL4N/ACompatible with various car models.
2001ToyotaTacoma2.7LL4N/ACompatible with various car models.
2000Toyota4RunnerManual2.7LL4N/AFitment: Primary with California Emissions.
2000Toyota4RunnerManual2.7LL4N/Aw/ Calif. Emissions; Auxiliary Air Valve
2000ToyotaTacomaAutomatic2.4LL4N/AFitment: Primary with California Emissions.
2000ToyotaTacomaAutomatic2.7LL4N/AFitment: Primary with California Emissions.
2000ToyotaTacomaAutomatic2.4LL4N/Aw/ Calif. Emissions; Auxiliary Air Valve
2000ToyotaTacomaAutomatic2.7LL4N/Aw/ Calif. Emissions; Auxiliary Air Valve
Directly replaces or cross-references 11 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Beck/Arnley — 159-1028Bremi — 50640HOLSTEIN — 2IAC0328Standard Ignition — AC526Walker Products — 215-20972-168112H135873-45532227075050AC4191AEA1041