Description
MAC Valve 3-Port Solenoid
This is the SAME EXACT solenoid sold by Holley (557-200) and other boost controller and EFI manufacturers used to control boost. They simply put their own label on it and double or triple the price.
**Note: These are genuine MAC Valves.**
Wire up nearly any EFI system on the market with this valve to control boost. Also great for plumbing air shifters, parachute release handles, and more.
Want to learn how to setup and tune a boost controller? Watch this video!
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