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GrimmSpeed Phenolic Thermal Spacer 8mm - Subaru Impreza 1.8L/2.2L 1993-1999
GrimmSpeed Phenolic Thermal Spacer 8mm - Subaru Impreza 1.8L/2.2L 1993-1999
GrimmSpeed Phenolic Thermal Spacer 8mm - Subaru Impreza 1.8L/2.2L 1993-1999
GrimmSpeed Phenolic Thermal Spacer 8mm - Subaru Impreza 1.8L/2.2L 1993-1999

GrimmSpeed Phenolic Thermal Spacer 8mm

Subaru Impreza 1.8L/2.2L 1993-1999

Read 1 Reviews | 1 Q&As
Part # 016001

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Features & Product Details

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.GrimmSpeed has presented you the answer to this age old problem, raising the intake manifold off the engine with their 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 GrimmSpeed's Phenolic Spacer, your hand can be placed on the intake manifold without any issues.
* GrimmSpeed has installed both with and without OEM Subaru Gaskets and have had no issues with either way.They do recommend using 2 sets of oem gaskets however, one on both sides of the spacer.
* USA made

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

When installing on the Impreza Phase 1 you will have to cut your EGR tube in half and insert a heater hose between the halves of the EGR tube to extend it.


Brand: GrimmSpeed
Installation Hardware Included: Yes
Material: Composite
Thickness: 8.0mm
Mfgr. Warranty: Lifetime
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.



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1 of 1 people found the following review helpful
Spacers 7 years ago
5out of 5stars

Installed using no gaskets. Slight bump in low end power and helped smooth out the dead spot in the power curve. Works as advertised.
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  • Q: 1995 Impreza LX 2.2l  mtisdeljr3316 months ago

    Understanding that for the early engine, you have to cut the EGR tube to create length, do you have heater hose you can recommend for this install? I.e. sizing, material? Hose clamps required? Thanks!
    • 1 of 1 people found the following answer helpful

      A:  Honestly I have never dealt with an EGR tube extension, but I would imagine it would be as simple as cutting the stock tube, grabbing some 1/2 heater hose(its .5inch if I remember correctly) and then securing the hose to the metal tube with some basic 1/2 inch clamps. Should be golden :)

      Rick C. @ RallySport Direct 6 months ago  
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