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- USA
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
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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
4.1 ★★★★★
Based on 869 reviews
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Product Reviews
★★★★★ 3
Good product
Color: Faded Denim Heather, Size: X-Large
Unfortunately I ordered the wrong size due to a size being recommended but it doesn’t fit but the product it self seems great I love the material and it seems well made
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
I'm gonna get more.
Color: Black Grey Heather, Size: XX-Large
Can't love this hoodie enough. It's a very light weight, soft, breathable hoodie for any occasion. It runs a bit on the long side so you don't have to worry about it riding up on you especially if you're taller. 10/10 would buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2025
★★★★★ 5
Great thin hoodie
Color: Black Grey Heather, Size: X-Large
Very soft and comfortable. It’s great in weather in the 50s-60s without wind. Perfect for those days where you could “wear a t shit and jeans or sweater and shorts” type days. Very breathable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2025
★★★★★ 4
Where are the thumb holes
Color: Black Grey Heather, Size: XX-Large
I love the fit Don't Really unzip it but the zipper seems solid I hate the thumb holes on all of these hoodies but this one needs it as the wrists have no elastic if you do not wear a watch or have bracelets like myself it will be in the palm of your hand but the hoodie is the first I've ever had that stays on top of your head not over your eyes
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
★★★★★ 5
Golf hoodie
Color: Dark Grey Heather, Size: Medium
Great fit comfortable for early spring or late fall golf
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
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