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  1. Celtic Motorsport
  2. Subaru
  3. 2004-2007 STi
  4. Engine
  5. Engine Misc.
  6. GrimmSpeed Phenolic Thermal Spacer Triple Thick 8mm WRX/STi/LGT/

GrimmSpeed Phenolic Thermal Spacer Triple Thick 8mm WRX/STi/LGT/

019001 In stock
$60.00
Do you know what your intake manifold sits on?...a superheated boxer engine. If you don't know already, the cooler your intake air is the more HP your car will achieve. We present you the answer to this age old problem, raising the intake manifold off the engine with GrimmSpeed's new real Phenolic Intake Manifold/TGV to Engine Thermal Spacer.

Phenolic spacers have been used for years by many other specialized automotive companies, but this is very new technology to the Subaru world.

What it does:

  • Greatly reduces the transfer of heat from engine to intake manifold thus reducing heat soak.
  • One of a kind true Phenolic material, not cutting board material like others.
  • The cooler your intake temperature is the denser the air is which leads to more power
  • For every 5 degree reduction in temperature, increases power by 1%.
  • The cooler and denser the intake air that the engine sucks in, increases the amount of air that can be mixed with fuel thus increasing efficiency.
  • Direct bolt-on.
  • When running the oem gasket only, your intake manifold gets very hot to the touch, enough to burn your hand. When the oem gasket is replaced with our Phenolic Spacer, your hand can be placed on the intake manifold without any issues.
  • We have installed both with and without OEM Subaru Gaskets and have had no issues with either way. We do recommend using 2 sets of oem gaskets however, one on both sides of the spacer.
  • USA made

    How it works:

  • The intake air in your engine travels through the airbox into the turbo, then into the aluminum intake manifold. The air exits the intake manifold and goes directly into the engine.
  • While the intake air is within the intake manifold it picks up alot of heat from the aluminum intake manifold. This added heat reduces air density thus reducing engine power capabilities.
  • In stock form your engine has a steel gasket between the intake manifold and engine which allows the heat from the engine to quickly transfer into the intake manifold. By replacing this steel gasket with the GrimmSpeed Phenolic Spacer you are greatly reducing the transfer of engine heat into the intake manifold.
  • Phenolic Spacers are able to withstand 500+ degrees F. Subaru engines run at around 200 degrees F, so the Phenolic Spacer is well within its max running temperature. GrimmSpeed has tested that it is also safe to run race fuel, E85, and methanol with the Phenolic Spacers.
  • The Phenolic Spacer will conduct 300-900 times less heat than the oem steel gasket.

    Applications:
    WRX 02-08
    STi 02-08
    Legacy GT 02-07
    Forester XT02-07


    Package Contents:
    1 Pair Phenolic Thermal Spacers
    8 Longer bolts with washers

    • SHIPPING AND RETURNS
    If you have any questions about shipping or returns, please contact us at (714) 670-7358 or through our contact page.

    DOMESTIC SHIPPING
    We ship packages worldwide with a variety of carriers. When purchasing products through the website, the shopping cart will automatically calculate shipping with UPS and FedEx. If you would like to use USPS as a shipping option please contact us and your order can be modified to reflect the changes. On large items the calculations may not be accurate. If this is the case you will be contacted about your order to discuss shipping options. All orders are sent with insurance and are shipped with signature required. This protects you from your packages getting stolen or lost. If you are not at home to sign for your package you may have your order shipped to a work or alternative address which can be done when the order is being placed. Please don’t hesitate to contact us if you have any questions about the shipping rates or shipping options.

    INTERNATIONAL SHIPPING
    Celtic Motorsport ships all of our products world-wide. We use a variety of excellent international carriers and offer great pricing and fast delivery. For smaller orders that are being shipped International we can use USPS Priority or EMS. Please contact us for a quote on your shipment.

    DAMAGED SHIPMENTS
    Celtic Motorsport insures all orders to protect you. Every order is packed with the utmost care to prevent damage to your order. In the event your shipment is damaged, you will need to contact us immediately upon receiving your order so that a claim process may be started. The claim may possibly be started by you the consumer but in most cases we will handle the claims.

    RETURNS
    Please contact Celtic Motosport if you have any questions about returning a product.

    • Returns must be made within 30 days of original shipment
    • Only uninstalled / unopened products in resalable condition can be returned
    • Most returns are subject to a 20% restocking fee
    • There are No returns on special order parts