GrimmSpeed 02-10+ WRX/STi/LGT 8mm Phenolic Thermal Spacer

Description

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.

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.
• Cooler and denser intake air, increases the amount of air that can be mixed with fuel thus increasing efficiency.
• For every 5 degree reduction in air 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 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.