Sniper EFI IAC Adapter

The Holley Sniper EFI IAC Adapter (part number 543-122) is a remote-mount idle air control valve solution designed for fuel-injected engines running Sniper EFI engine management systems. This adapter integrates precise idle control into your fuel-injected combo without requiring traditional manifold-mounted IAC installation, making it an ideal upgrade for custom engine builds, restorations, and performance applications where factory IAC locations conflict with intake manifold design or tuning goals.

Built by Holley—a leader in fuel injection and engine management technology—this Sniper EFI IAC adapter delivers dependable idle stabilization across varying engine loads and operating conditions. The remote-mount design provides installation flexibility, allowing you to position the valve where space and airflow considerations demand it. The package includes a mounting bracket and integrated filter, reducing the need for additional sourcing and ensuring clean air reaches the control valve. Compact at 3.4 x 3.35 x 7.05 inches and weighing just 0.83 lbs, it fits tight engine bays without sacrificing functionality or durability.

This adapter is built for builders and enthusiasts who demand compatibility with modern Sniper EFI systems while maintaining clean idle quality and throttle response. It's the precise solution when stock IAC mounting won't work—whether you're building a street engine, race platform, or restoring a classic with modern fuel injection. Every unit ships complete and ready to integrate into your Sniper EFI harness and air management setup.

Idle air control adapters for EFI systems vary by mounting style and control protocol. Holley's Sniper EFI platform has earned recognition in the performance engine-building community for intuitive tuning, reliable sensor integration, and strong idle control across engine speeds. Remote-mount IAC solutions are preferred in custom builds where traditional positioning creates airflow or mechanical conflicts, and Holley's inclusion of bracket and filter eliminates common installation hassles.