In Stock
- In Stock Items. Ships Today. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
In Stock

Selected Filters

Availability

- In Stock Items. Ships Today. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filters

Holley Boost Control Solenoids

4.75 out of 5 stars 4 Customer Reviews

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.

Showing In Stock Items. Show All 1 Items.

Results 1 - 1 of 1

Holley Boost Control Solenoids 557-202

Boost Controller Components, Holley EFI, Replacement, Solenoid, Service Part, for High Flow, Dual Boost Controller, Each

Part Number: HLY-557-202

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Page 1 of 1