Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Air and Fuel› Superchargers, Turbochargers and Components
Holley
SOLENOID, BOOST CONTROL
SKU: H00E 557-200
Easy — 1–2 hours
Overview
This solenoid features a compact design with dimensions of 1.97" in height and .94" in depth. It includes three 3/16" barb fittings, a 1/8" NPT plug, and a sintered brass muffler. The package also contains an ECU pigtail harness with factory-crimped ECU pins, as well as a spare ECU pin for custom harness modifications. A typical installation may require two of these solenoids.
Show original supplier description
Part #: 557-200
3 Port Boost Control Solenoid Valve
3 Port Boost Control Solenoid Valve
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
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
Dual Mac Valves & Holley Terminator X Setup for Turbo LS Drag Cars
Holley Terminator X Boost Control NO DOME NEEDED
HOLLEY TERMINATOR X BOOST CONTROL- OPEN LOOP
First Drive on E85! + 4 Port MAC Valve Boost Control Setup w/ Holley Terminator X
About MOTORMIA
Buy with Confidence
Returns & Fitment
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 PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy