Home / Shop / 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

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

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

Sale ends in Calculating... Mon 19 Oct, 12:52 am AEST

IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

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Description

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.

Part Type

Solenoid Boost Control

Data: v4.2 - Upd: 2026-10-18 00:30:29

Specifications

Product Attributes - Brand: Holley
Product Attributes - Manufacturer's Part Number: 557-200
Product Attributes - Part Type: Boost Controllers
Product Attributes - Product Line: Holley Boost Control Solenoids
Product Attributes - UPC: 090127683446
Product Attributes - Boost Controller Type: Electronic
Product Attributes - Boost Controller Style: Single solenoid
Product Attributes - Adjustable: No
Product Attributes - Wastegate Type: Electrical
Product Attributes - Quantity: Sold individually.

Reference Information

Brand Name/s	Holley
StreetFX SKU	hly557-200
SFX Item ID	4783673
Supplier Item Code	4783673
Manufacturer SKU	557-200
Manufacturer UPC	90127683446
Alternative References	HOL557-200, 2-pin

Compatibility

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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

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

Description

Part Type

Specifications

Reference Information

Compatibility

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