Restore proper idle performance to your Nissan Silvia S15 SR20DET with Terra Firma Automotive’s New Genuine Idle Air Control Valve Assembly (AAC). This vital component plays a key role in regulating airflow to the intake during idle conditions, ensuring smooth engine operation whether your vehicle is at a cold start, under load, or transitioning from boost. Known to resolve common drivability issues like low idle, erratic RPM fluctuations, and unexpected stalling, a properly functioning AAC valve is essential for maintaining factory-spec performance and reliability.
As these units become increasingly scarce, Terra Firma Automotive is proud to offer this new-in-box, never-used original Nissan valve—sourced directly to meet the needs of serious S15 owners and tuners. Replacing a faulty AAC valve can dramatically improve idle quality, particularly in modified or aging SR20DET engines where vacuum consistency and ECU feedback are critical.
With the S15 continuing to rise in value and collector interest, maintaining OEM-level function with authentic parts has never been more important. At Terra Firma Automotive, we’re committed to supplying genuine, hard-to-find components that keep your Silvia running strong and true to its heritage.
Trust Terra Firma for top-tier SR20DET components and get your idle back under control with a New Genuine Nissan Silvia S15 Idle Air Control Valve Assembly. Experience smoother starts, steadier idle, and better overall engine management—backed by OEM quality and our industry-leading expertise.
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