SET YOUR CAR
Buy Now, Pay Later!
FREE SHIPPING
On orders over $200
TALK TO A PARTS EXPERT
RALLYSPORT GUARANTEE
100% Money Back on Select Parts
Product images
Product Media
GrimmSpeed Phenolic Thermal Spacer 3mm (Part Number: )
GrimmSpeed Phenolic Thermal Spacer 3mm (Part Number: )
GrimmSpeed Phenolic Thermal Spacer 3mm (Part Number: )
GrimmSpeed Phenolic Thermal Spacer 3mm (Part Number: )
GrimmSpeed Phenolic Thermal Spacer 3mm (Part Number: )
Community Media
GrimmSpeed Phenolic Thermal Spacer 3mm (Part Number: )
GrimmSpeed Phenolic Thermal Spacer 3mm (Part Number: )
GrimmSpeed Phenolic Thermal Spacer 3mm
Subaru WRX/STI / LGT / FXT 2002-2014
Read 14 Reviews | 8 Q&As
Part # 018001
$50.00

In stock! Ships same day

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 Thermal Phenolic Spacers

Specifications

Brand: GrimmSpeed
Installation Hardware Included: No
Material: Composite
Thickness: 3.0mm
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.
Standard

PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

REVIEWS & CUSTOMER MEDIA

14 Reviews
4.1 out of 5 Stars
5 Stars
(9)
4 Stars
(1)
3 Stars
(2)
2 Stars
(1)
1 Stars
(1)
Customer Photos and Videos
GrimmSpeed Phenolic Thermal Spacer 3mm ( Part Number: 018001)
GrimmSpeed Phenolic Thermal Spacer 3mm ( Part Number: 018001)
Just get IAG.  7 months ago
Elliot Hahn
You can get the same exact thing from IAG for $45 AND it includes gaskets. Pretty annoying that you spend almost $70 and don't even get install hardware.
  
Was this review helpful?
2013 Sti 7 months ago
jomartes
I couldn't identified any difference in the temp. I think it's because all the heat that comes out of the radiator hit the intake manifold heating it up making this gasket not much useful.
  
Was this review helpful?
Does what it says 11 months ago
Alex
Lowered intake temps a few degrees and was almost no effort to install because I already had the TGVs off. Even fit over the alignment pins for the gaskets so they didn't slide all over. Would've gone with the 8mm but I heard some things about clearance issues with TMIC.
  
Was this review helpful?
2006 STI built longblock 1 year ago
tboldt199163299
I threw these on while I was having my heads redone. After many, many WOT pulls, my intake manifold don't seem to be collecting much heat.
  
Was this review helpful?
0 of 1 people found the following review helpful
No difference 3 years ago
PLN 33
I have these installed along with the 2 recommended gaskets and notice no difference. my manifold is still very hot even when I just cruise around town in 75 degree weather. maybe i have a defective pair if that's possible. kind of surprised me since all the other reviews are 5 stars
  
Was this review helpful?

QUESTIONS & ANSWERS

  • Q: Gaskets  BananaSammiches9 months ago

    Are TGV to cylinder head gaskets required for use these spacers or will the spacers themselves be enough to creat a proper seal?
    • 1 of 1 people found the following answer helpful

      A:  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.

      Tyler G.
        
      Was this answer helpful?
  • Q: fp black turbo inlet  Mcmcll2703395324 years ago

    will the 3mm's be enough for an fp turbo inlet? or would 8mm be better? diameter is 84 mm.
    • 0 of 0 people found the following answer helpful

      A:  The FP inlet is silicone and can be compressed to fit under the manifold, therefore 3mm spacers should be sufficient.

      Zach G. @ RallySport Direct 4 years ago  
        
      Was this answer helpful?
  • Q: Torque spec?  Cory51191276654 years ago

    Does the torque spec change since there is less thread contact?
  • Q: Turbo Inlet  dmonti117399514 years ago

    Will this fit paired with the AMR turbo inlet? I have heard both yes and no.
    • 0 of 0 people found the following answer helpful

      A:  This raises your intake manifold 3mm which allows for more room for the AMR turbo inlet.

      Tommy M. @ RallySport Direct 4 years ago  
        
      Was this answer helpful?

This Part Fits

Subaru Impreza
2.5 GT Hatchback
2009 Subaru Impreza 2.5 GT Hatchback
2010 Subaru Impreza 2.5 GT Hatchback
2.5 GT Sedan
2009 Subaru Impreza 2.5 GT Sedan
2010 Subaru Impreza 2.5 GT Sedan
WRX
2002 Subaru Impreza WRX
2003 Subaru Impreza WRX
2004 Subaru Impreza WRX
2005 Subaru Impreza WRX
2006 Subaru Impreza WRX
2007 Subaru Impreza WRX
WRX Hatchback
2008 Subaru Impreza WRX Hatchback
2009 Subaru Impreza WRX Hatchback
2010 Subaru Impreza WRX Hatchback
2011 Subaru Impreza WRX Hatchback
2012 Subaru Impreza WRX Hatchback
2013 Subaru Impreza WRX Hatchback
2014 Subaru Impreza WRX Hatchback
WRX Limited
2006 Subaru Impreza WRX Limited
2007 Subaru Impreza WRX Limited
WRX Limited Hatchback
2010 Subaru Impreza WRX Limited Hatchback
2011 Subaru Impreza WRX Limited Hatchback
2012 Subaru Impreza WRX Limited Hatchback
2013 Subaru Impreza WRX Limited Hatchback
2014 Subaru Impreza WRX Limited Hatchback
WRX Limited Sedan
2010 Subaru Impreza WRX Limited Sedan
2011 Subaru Impreza WRX Limited Sedan
2012 Subaru Impreza WRX Limited Sedan
2013 Subaru Impreza WRX Limited Sedan
2014 Subaru Impreza WRX Limited Sedan
WRX Premium Hatchback
2010 Subaru Impreza WRX Premium Hatchback
2011 Subaru Impreza WRX Premium Hatchback
2012 Subaru Impreza WRX Premium Hatchback
2013 Subaru Impreza WRX Premium Hatchback
2014 Subaru Impreza WRX Premium Hatchback
WRX Premium Sedan
2010 Subaru Impreza WRX Premium Sedan
2011 Subaru Impreza WRX Premium Sedan
2012 Subaru Impreza WRX Premium Sedan
2013 Subaru Impreza WRX Premium Sedan
2014 Subaru Impreza WRX Premium Sedan
WRX STI
2004 Subaru Impreza WRX STI
2005 Subaru Impreza WRX STI
2006 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI
WRX STI Hatchback
2008 Subaru Impreza WRX STI Hatchback
2009 Subaru Impreza WRX STI Hatchback
2010 Subaru Impreza WRX STI Hatchback
2011 Subaru Impreza WRX STI Hatchback
2012 Subaru Impreza WRX STI Hatchback
2013 Subaru Impreza WRX STI Hatchback
2014 Subaru Impreza WRX STI Hatchback
WRX STI Limited
2007 Subaru Impreza WRX STI Limited
WRX STI Limited Hatchback
2011 Subaru Impreza WRX STI Limited Hatchback
2012 Subaru Impreza WRX STI Limited Hatchback
2013 Subaru Impreza WRX STI Limited Hatchback
2014 Subaru Impreza WRX STI Limited Hatchback
WRX STI Limited Sedan
2011 Subaru Impreza WRX STI Limited Sedan
2012 Subaru Impreza WRX STI Limited Sedan
2013 Subaru Impreza WRX STI Limited Sedan
2014 Subaru Impreza WRX STI Limited Sedan
WRX STI Sedan
2011 Subaru Impreza WRX STI Sedan
2012 Subaru Impreza WRX STI Sedan
2013 Subaru Impreza WRX STI Sedan
2014 Subaru Impreza WRX STI Sedan
WRX STI Special Edition Hatchback
2010 Subaru Impreza WRX STI Special Edition Hatchback
WRX Sedan
2008 Subaru Impreza WRX Sedan
2009 Subaru Impreza WRX Sedan
2010 Subaru Impreza WRX Sedan
2011 Subaru Impreza WRX Sedan
2012 Subaru Impreza WRX Sedan
2013 Subaru Impreza WRX Sedan
2014 Subaru Impreza WRX Sedan
WRX TR
2006 Subaru Impreza WRX TR
2007 Subaru Impreza WRX TR