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Air and Fuel› Superchargers, Turbochargers and Components

GrimmSpeed

3-Port Boost Control Solenoid

$140.00 $136.00 Save $4.00

SKU: GRM057002

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The GrimmSpeed 3-Port Electronic Boost Control Solenoid is designed to replace your OEM 2-port solenoid for higher resolution boost control. It allows for quicker turbo spool and tighter control over boost levels, maintaining rock-solid boost throughout your power curve. This solenoid features a balanced valve capable of withstanding up to 120psi without slowing response time.
Show original supplier description
The GrimmSpeed Boost Control Solenoid is engineered as a direct-fit replacement for the factory boost solenoid in EJ series Subaru vehicles. A failing OEM solenoid can lead to frustrating symptoms such as inconsistent boost levels, undesirable boost creep, or the inability to maintain target pressure. This 3-port solenoid design directly matches the OEM connections, simplifying the installation process. It connects to the factory wiring and vacuum lines without requiring modifications or re-tuning. The unit features a balanced valve capable of withstanding up to 120psi without impacting response time, and its high-temperature coils ensure consistent performance even in extreme engine bay heat. GrimmSpeed emphasizes a plug-and-play installation for this boost control solenoid, often achievable within 15 minutes with their provided guides. The design incorporates model-specific brackets and uses Subaru wiring harness connectors, eliminating the need for cutting or crimping OEM wires. This focus on ease of installation and direct-fit ensures a clean and robust setup. As with any upgrade to the boost control system, a professional tune is required for optimal and safe operation. The product is designed for the 2006-2007 Subaru WRX, 2004-2007 Subaru WRX STI, and 2004-2008 Subaru Forester XT models.

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

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Specifications

BrandGrimmSpeed
Part NumberGRM057002
CategoryAir and Fuel
5,000+ Trusted brands
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(760) 282-4645 hello@motormia.co

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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.

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Shipping

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.

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