PERRIN Front Mount Intercooler Boost Tube Kit Black Subaru WRX 2015-2021 | PSP-ITR-437-3BK

Product Fitment: 

2015-2021 Subaru WRX

At the core of this kit are the PERRIN Boost Tubes, designed with the smoothest and shortest routing possible to ensure unrestricted airflow. With tubing diameters expanding from 2.25” at the turbo to 2.75” at the throttle body, the system supports airflow levels beyond what most turbochargers can produce—making it ideal for both upgraded and high-performance builds.

Constructed from lightweight CNC mandrel-bent aluminum, the boost tubes provide strength without added weight. Each tube features oversized beaded ends to keep couplers securely in place, ensuring leak-free performance even under high boost pressure. A durable powder-coated finish protects against corrosion and wear, and is available in three color options:

• Gloss Neon Yellow

• Textured Black

• Red

To optimize engine bay space and simplify installation, this kit includes a high-capacity 6061 aluminum washer fluid tank, allowing proper boost tube routing without sacrificing functionality.

Also included is a PERRIN Coolant Overflow Tank, finished in a textured powder coat for long-lasting durability. This redesigned tank improves clearance and ensures seamless integration with the intercooler piping.

Mounting is handled by CNC-machined direct-mount intercooler brackets, constructed from lightweight aluminum for superior rigidity, corrosion resistance, and a clean, performance-oriented appearance.

Key Features:

• Complete FMIC kit for 2015–2021 Subaru WRX

• Optimized boost tube routing for maximum airflow

• Tube sizing:

  • 2.25” (turbo side)

  • 2.75” (intercooler to throttle body)

• CNC mandrel-bent aluminum boost tubes

• Oversized beaded ends for secure, leak-free connections

• Powder-coated finishes: Neon Yellow, Black, Red

• Includes 6061 aluminum high-capacity washer fluid tank

• Includes PERRIN coolant overflow tank (powder coated)

• Lightweight CNC-machined aluminum intercooler brackets

• Maintains clearance with OEM components

• Bumper Beam Sold Separately

Performance Benefits:

• Improves airflow and turbo efficiency

• Supports higher horsepower and increased boost levels

• Reduces restriction for better throttle response

• Enhances engine bay layout for easier installation

Construction & Design:

• Lightweight aluminum piping and brackets

• Corrosion-resistant powder-coated components

• Precision CNC machining for exact fitment

• Engineered for durability and long-term performance