AEM Induction 21-735WB AEM 15-17 Fits Subaru WRX STi 2.5L H4 - Cold Air Intake System, Wrinkle Black
AEM Induction 21-735WB AEM 15-17 Fits Subaru WRX STi 2.5L H4 - Cold Air Intake System, Wrinkle Black
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AEM Induction 21-735WB AEM 15-17 Fits Subaru WRX STi 2.5L H4 - Cold Air Intake System, Wrinkle Black

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  • AEM Induction 21-735WB AEM 15-17 Fits Subaru WRX STi 2.5L H4 - Cold Air Intake System, Wrinkle Black
  • Designed to increase horsepower and torque by improving engine airflow
  • Replaces restrictive factory airbox and air filter for enhanced performance
  • Relocates air filter outside the engine bay to draw in cooler, denser air
  • Cooler intake air improves combustion efficiency for greater power gains
  • Includes oversized AEM Dryflow synthetic air filter—oil-free, washable, and reusable
  • Mandrel-bent aluminum intake tube for smooth airflow and reduced restriction
  • High-quality hardware included for durability and secure fitment
  • Improves engine sound for a more aggressive tone under acceleration
  • Filter provides long service life and easy maintenance
  • System design and components vary by application—refer to specific installation instructions for details
Current price is Now $323.45
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was $349.99
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