Process West

Process West Cold Air Intake 72mm Big MAF Subaru WRX / STI 2002-2007

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Regular price $404.00
Sale price $404.00 Regular price
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Product Fitment:

2002-2007 Subaru WRX

2004-2007 Subaru STI

Unlock improved airflow and a more aggressive induction sound with the Process West 72mm Cold Air Intake, designed as a direct replacement for the factory intake system on 2002-2007 Subaru WRX and STI models. Engineered to reduce intake restriction, this system allows your EJ engine to breathe more efficiently-helping improve overall performance and throttle response.

By eliminating the restrictive factory airbox, this intake delivers a noticeable increase in intake sound, producing a deeper, more pronounced induction tone under acceleration without requiring additional modifications.

Constructed from lightweight CNC mandrel-bent aluminum tubing, the system ensures smooth, uninterrupted airflow. A precision-machined airflow meter mount allows you to retain the factory MAF sensor without modification, making installation simple and reliable. The intake is finished in a sleek black coating for a clean, OEM-style appearance under the hood.

Each kit includes a high-flow K&N air filter, providing improved airflow and long-lasting filtration compared to the stock unit.

Designed for convenience, this intake is a true bolt-on upgrade-requiring no cutting or permanent modifications, making it ideal for both enthusiasts and daily drivers.


Key Features:

  • Direct replacement for factory intake system

  • 72mm intake diameter for improved airflow

  • CNC mandrel-bent aluminum intake piping

  • Machined mount retains factory MAF sensor

  • Includes high-flow K&N air filter

  • Durable black finish for OEM-style appearance

  • No cutting or permanent modifications required


Performance Benefits:

  • Reduces intake restriction for better airflow

  • Improves throttle response and engine efficiency

  • Enhances induction sound under acceleration

  • Maintains reliable filtration with reusable filter


Construction & Design:

  • Lightweight aluminum tubing

  • Smooth airflow path for maximum efficiency

  • Precision-engineered fitmentt

  • Clean, factory-style finish

Vehicle Compatibility

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