This is a simple, cost effective way to maximize the power of your current set-up. The 3mm spacer is thick enough to provide superior thermal insulation to the factory steel gasket.

Why it works: The concept behind the phenolic spacer is simple: isolate the heat produced by engine from the entire intake tract. This results in a cooler path for the intake air. This leads to lower and more stable intake air temperatures (IATs). Lower IATs mean you have the capability to make more power with your current set-up.

Includes:

• 3mm Phenolic Spacers x2
• Nitrile Intake Gasket x4

• 02-14 WRX
• 04-20 STI
• 05-12 Legacy GT
• 04-13 Forester XT