COBB SF Airbox | Subaru WRX STI 2015-2018 1999-2000-subaru-forester - Improves CVT reaction at

- Improves CVT reaction at cold temperature

100% synthetic extreme pressure lubricant for an efficient anti-wear protection

34% HP / +12

Reiger Suspension represents the highest level of rally and off-road damper technology available today

Max Gains: +43

COBB SF Airbox | Subaru WRX STI 2015-2018 1999-2000-subaru-forester - Improves CVT reaction atThe SF Air Box adds the benefits of a cold air intake to the outstanding performance of the SF Intake. The factory inlet directs cold air from the front grill to the SF Airbox, which encloses the SF Intake. Hot engine bay air that robs horsepower is prevented from entering the intake system to provide consistent intake performance. This unique design also separates rainwater from the intake air, eliminating the water ingestion issues that plague in