Exterior Components› Body Panels and Components
Holley
SOLENOID, BOOST CONTROL
SKU: H00E 557-200
Moderate — 2–4 hours
Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Holley |
| Part Number | H00E 557-200 |
| Weight | 0.45 lb |
Videos
Holley Terminator X Boost Control: Full Setup Guide (Wastegates, Onboard Air, MAC Valve & Tuning)
Holley Efi pro series boost control solenoids
Boost control wiring and setup Holley efi
Holley 6 In 1 PNP (Alt/Flex/Dial/Boost/Dome/Fill/Vent) Ultimate Combos
Holley dual Mac valve boost control and dome pressure sensor
The OG is back! Fox Body Mustang Holley Terminator X Kit - Overview & Full Explanation (550-937F)
How to setup Dome Boost Control on Holley Terminator X, HP and Dominator
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy