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GrimmSpeed Boost Solenoid - WRX 2002-2005

GrimmSpeed Boost Solenoid - WRX 2002-2005


Regular price $130.29 USD
Regular price Sale price $130.29 USD
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*** Electronics have a no return policy. Please ensure proper fitment before purchasing. ***

GrimmSpeed has introduced the most complete and easy-to-use 3-port electronic boost solenoid available on the market. This GrimmSpeed Boost Solenoid allows you to raise the OEM boost levels in a quick and efficient manner. If you try to raise the boost on the weak OEM boost solenoid, it will become unpredictable and unable to maintain stable and safe boost levels. Using this solenoid, you are able to spool your turbo much quicker and maintain a rock-solid boost level. GrimmSpeed has made this solenoid strong enough to withstand up to 120psi.

Revolutionizing the Subaru boost solenoid market, GrimmSpeed has created model-specific install brackets that allow you to directly fit this boost solenoid onto your Subaru for a factory fit. No more zip-tying! The GrimmSpeed Boost Solenoid gives you the factory fitment you have been waiting for. 


Staying with the OEM fitment theme, this boost solenoid uses a Subaru-style wiring harness so you can simply unplug your OEM solenoid and plug in the GrimmSpeed unit. No more cutting the OEM wiring and crimping wires together!


For this unit, GrimmSpeed uses ultra low-profile hose fittings to keep it as small and clean as possible. The hose fittings are nickel-plated brass, so you don't have to worry about them snapping off like the OEM plastic hose fittings!



  • Direct Plug-and-Play Into OEM Wiring
  • Completely Custom-Made Valve
  • Can Be Used with AN Fittings
  • Mounting Bracket Directly Bolts onto Factory Location
  • Low-Profile Brass Hose Fittings
  • Designed to Work with the Stock Subaru ECU (requires tuning)
  • Reliables handles the vibrations and temperatures of your engine bay
  • Bolt-In Mounting Bracket and Hardware Included
  • No Wire Splicing Required
  • Allows You to Raise the Factory Boost Levels and Reach Boost Sooner
  • Up To 10% Faster Response and Greater Flow than Other Valves
  • Nickel-Plated Brass Fittings
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Warranty Information


RalliTEK branded products are warranted to the original owner against manufacturing defects in materials and workmanship for the lifetime of the product.

If a RalliTEK branded product covered by this warranty fails due to a manufacturing defect we will repair the product, without charge, or replace it at our discretion. This policy covers only original, unaltered, and unmodified materials and workmanship. This warranty does not cover damage caused by incorrect installation, accident, improper care, negligence, normal wear and tear, or the natural breakdown of colors and materials over extended time and use. Damage not covered under warranty may be repaired for a reasonable rate and a fee will be charged for return shipping.

No payment or reimbursement shall be made for installation, removal, transportation, or other charges. The remedies outlined in this instrument are exclusive and the liability of RalliTEK with respect to any sale shall not exceed the price of the product on which the liability is based.

For warranty evaluation, please contact RalliTEK Customer Service at (503) 619.0055 or to obtain a return authorization. Once this step has been completed, your product must be returned directly to the RalliTEK Warranty Department, 13339 NE Airport Way, Suite 500, Portland, OR 97230. All shipping to the Warranty Department must be pre-paid and insured. RalliTEK will not be liable for damaged or lost inbound packages.

      NOTE: This warranty is only available within the United States or Canada

  • This warranty gives you specific legal rights; you may have other rights, which vary from state to state.
  • This warranty does not cover products sold by RalliTEK that are not RalliTEK branded products.

The RalliTEK website sells discontinued, special markup, and slightly blemished products at significant discounts as 'factory seconds' products. This warranty does not automatically cover products purchased as factory seconds. RalliTEK reserves the right to determine if any warranty applies on a case-by-case basis for factory second parts. If approved, the RalliTEK Warranty Department may repair factory second products for a reasonable charge and applicable shipping charges.


Non-RalliTEK branded products do not have any written or implied warranties. Products on are sold with the warranty applied directly from the manufacturer. The customer must contact the product brand manufacturer for any warranty details. All products sold by RalliTEK are intended for off-road and/or race use only, as suggested by the manufacturer, and should be installed and set up by professional service centers only. RalliTEK is not responsible for any product failure or failure due to installation. Should a warranty claim arise, the customer and the manufacturer will handle all warranty issues directly.

There is no warranty on high-performance or race-related parts due to the nature of usage.

No payment or reimbursement shall be made for installation, removal, transportation, or other charges. The remedies outlined in this instrument are exclusive and the liability of RalliTEK with respect to any sale shall not exceed the price of the product on which the liability is based.


Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. RalliTEK shall not, in any case, be liable for special, incidental, consequential, indirect, or other similar damages arising from any breach of these warranties even if RalliTEK or its agent has been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you. This warranty is governed by the laws of the State of Oregon.

Installation Instructions


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Subaru Impreza WRX Base - 2005