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Holstein 2IAC0348 Idle Air Control ValveOE Quality 60-Day Returns
Part #: 2IAC0348

Holstein 2IAC0348 Idle Air Control Valve

Holstein Parts
28 vehicles fit this part
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Holstein Parts
Fitment: Subaru, Baja, Forester, Impreza, Legacy, and Outback
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Idle Air Control Valve for Subaru Applications

Restore stable idle control with this Holstein Parts idle air control valve, part number 2IAC0348. It is a direct-fit replacement for select Subaru models and helps maintain proper idle speed during cold starts, stop-and-go driving, and accessory load changes.

  • Idle air control valve for fuel injection system service
  • Compatible with select 1999-2006 Subaru Baja, Forester, Impreza, Legacy, and Outback applications
  • Holstein Parts replacement for OE-style fit and function
  • Cross-references Standard Ignition AC519 for the same application
  • Also referenced by OE numbers 2H1306, 22650AA19C, and 22650AA192

Product Details

Holstein Parts 2IAC0348 is an idle air control valve used to regulate bypass air around the throttle plate so the engine can maintain a steady idle. This part number 2IAC0348 is listed for multiple Subaru models, including 2006 Subaru Baja, 2004 Subaru Forester, and 2001 Subaru Legacy, with fitment varying by production date. If you are servicing a Subaru Baja, Subaru Forester, or Subaru Impreza with idle fluctuation concerns, verify the vehicle build date against the fitment notes before ordering.

Common Issues This Part Can Address

  • Unstable or surging idle speed
  • Stalling when coming to a stop
  • High idle after startup
  • Idle speed changes when electrical loads are turned on
  • Poor cold-start idle control

Installation Notes and Tips

Confirm the vehicle’s production date and compare it to the fitment notes, since several applications are limited to specific build dates. Inspect the throttle body, intake passages, and related connectors before installation, and clear any stored fault codes after replacement if required by the vehicle’s service procedure.

Quality Assurance

Holstein Parts supplies OE-style replacement components for fuel and air delivery service. This idle air control valve is built for direct replacement use on the listed Subaru applications and cross-references Standard Ignition AC519 for the same application.

This part fits 28 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersFuel TypePositionNotes
2006SubaruBaja2.5LH4GASN/ATo 04/30/2006; Holstein Parts
2005SubaruBaja2.5LH4GASN/ATo 04/30/2005; Holstein Parts
2004SubaruBaja2.5LH4GASN/ATo 02/29/2004; Holstein Parts
2004SubaruForester2.5LH4GASN/ATo 03/31/2004; Holstein Parts
2004SubaruImpreza2.5LH4GASN/ATo 03/31/2004; Holstein Parts
2004SubaruLegacy2.5LH4GASN/ATo 02/29/2004; Holstein Parts
2004SubaruOutback2.5LH4GASN/ATo 02/29/2004; Holstein Parts
2003SubaruBaja2.5LH4GASN/ATo 06/30/2003; Holstein Parts
2003SubaruForester2.5LH4GASN/ATo 03/31/2003; Holstein Parts
2003SubaruImpreza2.5LH4GASN/ATo 12/31/2002; Holstein Parts
2003SubaruLegacy2.5LH4GASN/ATo 06/30/2003; Holstein Parts
2003SubaruOutback2.5LH4GASN/ATo 06/30/2003; Holstein Parts
2002SubaruForester2.5LH4GASN/ATo 02/29/2002; Holstein Parts
2002SubaruImpreza2.5LH4GASN/ATo 05/31/2002; Holstein Parts
2002SubaruLegacy2.5LH4GASN/ATo 05/31/2002; Holstein Parts
2002SubaruOutback2.5LH4GASN/ATo 05/31/2002; Holstein Parts
2001SubaruForester2.5LH4GASN/ATo 02/29/2001; Holstein Parts
2001SubaruImpreza2.5LH4GASN/ATo 11/30/2000; Holstein Parts
2001SubaruLegacyAutomatic2.5LH4GASN/ATo 05/31/2001; Holstein Parts
2001SubaruOutbackAutomatic2.5LH4GASN/ATo 05/31/2001; Holstein Parts
2000SubaruForester2.5LH4GASN/ATo 12/31/1999; Holstein Parts
2000SubaruImpreza2.5LH4GASN/ATo 06/30/2000; Holstein Parts
2000SubaruLegacyAutomatic2.5LH4GASN/ATo 06/30/2000; Holstein Parts
2000SubaruOutbackAutomatic2.5LH4GASN/ATo 06/30/2000; Holstein Parts
1999SubaruForester2.5LH4GASN/ATo 06/30/1999; Holstein Parts
1999SubaruImpreza2.5LH4GASN/ATo 06/30/1999; Holstein Parts
1999SubaruImpreza2.2LH4GASN/A[U0] Electric Central Door Locking [UT] [C0]; To 06/30/1999; Holstein Parts
1999SubaruLegacy2.2LH4GASN/A[C0] [U0]; To 05/31/1999; Holstein Parts

* 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:

22650AA19222650AA19C2H1306AC519

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

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