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Ships within 48 hours · Estimated delivery Sep 29 - Oct 4
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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 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Great buy!
Color: 5pcs Pink 3
Perfect size pouch and good quality grooming supplies!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 16, 2025
★★★★★ 5
Good quality
Color: 3pcs Pink
Really great set for my baby girl who is 3 months old! Simple and easy to use
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 14, 2025
★★★★★ 3
Wouldn't buy again
Color: 5pcs Pink 2, Color: 5pcs Pink 2
I have mixed feelings about this. I want to like it - and for the most part I do. However, I cant give it full marks because the item I received looks dirty. I'm not sure if there was dirt or something else in the mold or material that was used to make the plastic on the nail clippers, but there is clearly dirt or mold imbedded into the plastic. It looks horrible and makes me question the sanitariness of the items which is not something I want when it comes to items for a baby. Everything else looks ok for the most part. The brush is soft, the scissors are nice and they cut well. The nail files are similar to those you'd find in press on nail kits and they're very small making them a bit harder to use. I like that this comes in a nice case to keep everything together. I do feel this is a bit overpriced in my opinion though.
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Reviewed in the United States on May 8, 2025
★★★★★ 4
Good
Color: 3pcs Wooden
Good
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Reviewed in the United States on March 12, 2026
★★★★★ 5
Textura de la piel
Me gusta su protector para la piel deja una textura sin grasa
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Reviewed in the United States on May 27, 2026
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