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 Phenolic Intake Manifold/TGV to Engine Thermal Spacer.
Phenolic spacers have been used for years by many other specialized automotive companies, but this is new technology to the Subaru world.
Included:
• GrimmSpeed Intake Manifold Phenolic Spacer - 8mm - 2002-14 Subaru WRX, 2004-21 Subaru STI
Features:
• Direct bolt-on.
• When running a gasket only, your intake manifold gets very hot to the touch, enough to burn your hand. When our gaskets are paired with our Phenolic Spacers, your hand can be placed on the intake manifold without any issues.
• We do recommend using 2 sets of our gaskets, one on both sides of the spacers.
• USA MADE.
