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Holley Boost Control Solenoids 557-200 Controllers, EFI, Solenoid Valve, 3 Port, 1/8 in. NPT, 2-pin ECU Pigtail, 3/16 in. Barb Fittings, 1/8 in. NPT Plug, Spare ECU Pin, Each

SKU: HLY557-200

Boost Controllers

Holley Boost Control Solenoids 557-200 Controllers, EFI, Solenoid Valve, 3 Port, 1/8 in. NPT, 2-pin ECU Pigtail, 3/16 in. Barb Fittings, 1/8 in. NPT Plug, Spare ECU Pin, Each

SKU: HLY557-200

Boost Controllers
A$243.48
IN STOCK! Est Ship 4-7 days. In stock at 2 locations (more than 10 available)

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Description

Exclusive Holley flash sale discount at StreetFX!

Talk about timing! This is a limited offer while stocks last on various Holley part numbers. There's never been a better time to buy your Holley upgrades, so what are you waiting for?!

This item is currently on sale!

Same-day payment required to secure promotional price. Promotions may end early or be extended based on stock levels or other factors.

Boost Control Solenoid - 3-Port - Fittings Included - Holley Dominator / HP EFI - Kit


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:16:35

Data: v4.2 - Upd: 2026-11-09 03:55:27

Features

Vehicle Compatibility and Return Conditions.

This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.

Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.

Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.

(keyword: ecu)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Holley, Hilborn, Holley Efi, Retrobright, Terminator X
StreetFX SKU hly557-200
SFX Item ID 4783673
Accounting SKU hly-557-200
Manufacturer SKU 557-200
Manufacturer UPC 090127683446
Alternative References 557-200, HLY-557-200, HOL557-200

Boost Controllers, Holley EFI, Solenoid Valve, 3 Port, 1/8 in. NPT, 2-pin ECU Pigtail, 3/16 in. Barb Fittings, 1/8 in. NPT Plug, Spare ECU Pin, Each

Holley boost control solenoids are designed for optimal performance when using the boost control function of Holley EFI. Some setups require two solenoids and some require one. They're driven by a Pulse Width Modulated (PWM) output of the ECU. It is advised NOT to use the PWM+ outputs on a Holley HP ECU, but rather use the PWM- outputs. If you have a Holley Dominator ECU, use either the PWM- outputs or a PWM+ output on the J2B connector.

Product Attributes
BrandHolley
Manufacturer's Part Number557-200
Part TypeBoost Controllers
Product LineHolley Boost Control Solenoids
UPC090127683446
Boost Controller TypeElectronic
Boost Controller StyleSingle solenoid
AdjustableNo
Wastegate TypeElectrical
QuantitySold individually.

Compatibility

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