AEM 2018 Subaru WRX STI 2.5L H4 F/I Cold Air Intake System - Wrinkle RedThe AEM 21 836WR Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno tested to fit specific Subaru WRX STI models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the original air

This air intake system was developed to accommodate the engine's factory emissions control devices including the intake air temperature sensor

The high-temp wrinkle-black powder-coating also insulates the tube from engine heat and protects the tube from corrosion

or public roads

View the 21-690C vehicle applications to determine the legal status for each vehicle

The Quantum Pro DRY S filter is a 360-degree radial flow air filter with oil-free

The AEM 21-836WR Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing

View the 21-754DS vehicle applications to determine the legal status for each vehicle

durable gunmetal gray powder coated finish for lasting good looks

This makes for a perfect filter fit and sealing surface every time

but at aFe Control we provide you with the perfect balance by pairing the proper size front and rear bars together to offer increased roll stiffness without upsetting the vehicles balance and traction control system

The heat shield also has a rubberized edge trim to better isolate air from engine bay heat

The AEM 21-712C Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing