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Description
Holley Boost Control Solenoids 557-201SOLENOID, 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
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
Specs
| Brand | Holley EFI |
|---|---|
| Color | Black |
| Emission Code | 5 |
| Inlet / Outlet Size | 1/4" NPT |
| Material | Billet |
| Product Type | Boost Control Part |
| Part Number | 557-201 |
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4.3 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
A Translation from the heart of the Father
Format: Paperback
I have been enormously blessed by Brian Simmons Passion translation of the scriptures. If you want to know the heart of Father God I highly recommend the TPT translation. This translation has lead me and many others in a deeper walk with Christ.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 26, 2024
★★★★★ 5
A help aid to combat rejection
Format: Hardcover
Seems excellent. Bought as a gift.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Good read🥰
Format: Hardcover
The content is helping me move through a situation
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Best work ever!!!
Format: Hardcover
Joyce's best work. All in our Bible study grew a lot from this book!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
★★★★★ 5
Life-changing
Format: Hardcover
This book my eyes to so many patterns that I've had since I was a child. I'm now much later in my life and wish I had had a book like this when I was in my 20s and 30s, and not my 70s. Nevertheless the information is always helpful and helped open my eyes to so many things. Nothing else that helps me move forward. I love all of Joyce's books and follow her Ministry. She is a no-nonsense straight to the punch speaker. She talks about very uncomfortable things. Which we still need to hear either way. So I recommend this book Kylie for anyone who's gone through rejection from friends, parents, friends, jobs, rejection from spouses. Joyce is a no-nonsense straight to the heart person. Sometimes we tiptoe around these issues, what's the point of that. I highly recommend this book
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 22, 2025
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