Air and Fuel› Intake Manifolds and Components

STANDARD IGN

IDLE AIR CONTROL VALVE

$192.42

SKU: S092 AC478

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Standard Motor Products AC478 Idle Air Control Valve is designed to regulate airflow into the engine, ensuring optimal idle performance and emissions control. It is built with OE-level quality and reliability to guarantee a precise fit for your vehicle and help maintain engine efficiency. This valve is a dependable choice for servicing a variety of Toyota models.

This Idle Air Control Valve helps manage the engine's idle speed by controlling the amount of air bypassing the throttle plate, which is crucial for stable engine performance. Common symptoms of a failing IAC valve include rough idling, stalling, and difficulty starting the engine. If you experience these issues, replacing the valve can restore proper engine function.

Fitment

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Specifications

BrandSTANDARD IGN
Part NumberS092 AC478

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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