Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
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
4.5 ★★★★★
Based on 1782 reviews
Sort
Product Reviews
★★★★★ 5
Pickleball paddles and carry bag
Color: BlackBlue*2
Very nice paddles for the price. I am a beginner and it has a nice sweet spot, light weight and nice grip. Nice bag for carrying your paddles and a few extras!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
Great Value. COMES WITH INDOOR BALLS
Color: Black*4
very very good value for the 4 rackets and balls. i’ve held good rackets and very bad rackets and these are pretty decent rackets and if you’re play casually or just competitively with friends these are great and will not hold you back especially if you’ve been playing for less than 3 months. I do plan on upgrading to a better racket soon but I will 100% keep these to bring for my friends to use. I will say they come with indoor balls so I would recommend getting some nice outdoor franklin balls if you’re playing outside. other than that I am very happy with it and would buy it again if I could go back in time and needed my first racket again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
★★★★★ 5
Good quality
Color: BlackBlue*2
Good quality for the price and the carry case is an added bonus!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
★★★★★ 5
Great quality
Color: Black*4
Awesome!! Lightweight sturdy and grip feels comfortable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
★★★★★ 5
Good quality.
Color: Purple
This cushion is ideal for floor exercises; it is a good size and has well-padded thickness so your knees or back don't hurt when resting against the floor.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026