Holley Efi High Flow Dual Solenoid Boost Control Kit

This kit contains a set of pre-installed high flow solenoids, which feature a dual O-ring sealing design, preventing any boost leaks out of the manifold. A black anodized billet aluminum manifold, with built in mounting provisions. Two pre-terminated connectors for a quick installation, and extra pins for those of you wanting to cut the harnesses to custom lengths. Finally two 1/4" push-lock fittings to simplifying the installation process. The Holley EFI boost control proprietary solenoid design flows nearly 40% more than comparable designs and up to 90% more than conventional 3-port boost control solenoids.
Specifications
Inlet / Outlet Size: 1/4" NPT
Material: Billet
Part Number: 557-201 Note: When selecting solenoid configuration in the Holley EFI software, use the Dual Holley drop down selection. Features:
Black Anodized Billet Dual Port Manifold
Two 1/4” NPT Push-Lock Fittings for easy plumbing and installation
Two Pre-Terminated connectors simply plug into the solenoids and pin into Holley EFI ECU connectors
The billet manifold contains built in mounting provisions, setup for ¼ hardware
Proprietary design to flows nearly 40% more than comparable designs and up to 90% more than conventional 3-port boost control solenoids

Install Instructions