GrimmSpeed 3mm Phenolic Thermal Spacer Subaru WRX 2002-2014 / STI 2004-2021 | 018001

Product Description

Fitment Information:

2002-2014 Subaru WRX

2004-2021 Subaru STI

2005-2009 Subaru Legacy GT

2004-2013 Subaru Forester XT

Features:

In case you weren't aware, the cooler your intake air is the more HP your car will achieve. One way to reduce intake air temperatures is to raise the intake manifold off the engine with GrimmSpeed's Phenolic Intake-Manifold-to-Engine Thermal Spacers. Phenolic spacers have been used for years by many other specialized automotive companies, but GrimmSpeed is one of the first to offer this technology to the Subaru world.

Thickness: 3mm

Greatly reduce the transfer of heat from engine to intake manifold thus reducing its temperature and heat soak

One of a kind true Phenolic material, not cutting board material like others

Cooler intake temperature = denser air = more power

The cooler and denser the intake air is, the more air that can be mixed with fuel thus increasing efficiency

Every 5° reduction in air temperature increases power by 1%

Direct bolt-on

Made in the USA

Sold as a pair

It is recommended to use one OEM intake manifold gasket #14035AA421 on each side of these GrimmSpeed spacers. These are available to purchase separately.