Holley Efi 557-201 Solenoid, Boost Control

Introducing the newest development from the Holley EFI engineering team. The Holley EFI High Flow Dual Port 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.

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