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Injen 04-07 STi / 06-07 WRX 2.5L Wrinkle Red Cold Air Intake

Take your Subaru to the next level with the Injen SP Series Intake System. This cold air intake system features the patent-pending MR Technology process for optimal gains and a safe A/F ratio.

With its 6061-T6 aluminum air intake tube, this system provides a smooth uninterrupted path for highly efficient airflow. The Injen team has ensured that a safe Air fuel (A/F) ratio has been maintained throughout the power band.

  • Increased torque up to 22.63 ft./lbs.
  • CARB EO #: D-476-5
  • Includes a fully serviceable Injen SuperNano-Web dry air filter
  • Available in multiple finishes
  • Backed by the unbeatable Injen Technology limited Lifetime Warranty
Make Model Year Type
Subaru Impreza 2004 WRX STI
Subaru Impreza 2005 WRX STI
Subaru Impreza 2006 WRX
Subaru Impreza 2006 WRX Limited
Subaru Impreza 2006 WRX STI
Subaru Impreza 2006 WRX TR
Subaru Impreza 2007 WRX
Subaru Impreza 2007 WRX Limited
Subaru Impreza 2007 WRX STI
Subaru Impreza 2007 WRX STI Limited
Subaru Impreza 2007 WRX TR
In 1988, a young entrepreneur named Ron Delgado was working late into the evening – trying to find a better way to polish products for his family “job shop” business. At the time, most machines only polished along flat surfaces. But when Ron had the idea for a multi-axis machine – which could polish better and faster than anything he had used before - he was determined to make it a reality. What began as a mission to perfect the art of polishing soon grew into a full-fledged quest to develop industry-changing design and manufacturing solutions. And, in 1991 – as the demand for high quality aftermarket air induction products began to reach scale – Ron knew he had found an opportunity to make his mark on an industry he loved. Launching Injen – with a pioneering patent that allowed enthusiasts to achieve better performance from their vehicles without annoying “Check Engine Lights” (CEL’s) – Ron and his team have never waivered from their commitment to innovate and deliver products that solve for the increasingly complex nature of vehicles brought to market.
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