PERRIN PSP-ITR-430-3RD FMIC Boost Tube Kit for 2008-2014 Subaru STI 2.5L H4

Vehicle Fitment

• 2008-2010 Subaru Impreza WRX STI (2.5L Turbo H4 EJ257, AWD)
• 2011-2014 Subaru WRX STI (2.5L Turbo H4 EJ257, AWD)

Fitment Notes

• Designed exclusively for use with the PERRIN Front Mount Intercooler system.
• Not compatible with the factory top-mount intercooler.
• Fits left-hand-drive (LHD) vehicles.
• Requires an aftermarket intake system for proper installation.

Features

• CNC mandrel-bent aluminum boost tubes maximize charge-air flow.
• Stepped 2.25-inch to 2.75-inch tubing optimizes airflow and minimizes pressure drop.
• Durable red textured powder-coated finish provides corrosion resistance.
• Beaded tube ends help prevent silicone coupler blow-off under high boost.
• Smooth routing improves airflow while maintaining OEM component clearance.
• Designed to support applications exceeding 1,000 horsepower when paired with the PERRIN FMIC core.
• Direct bolt-on design for use with the complete PERRIN Front Mount Intercooler system.
• Includes a PERRIN aluminum coolant overflow tank to provide proper boost tube clearance.

Specifications

• Part Number: PSP-ITR-430-3RD
• Brand: PERRIN Performance
• Product Type: Front Mount Intercooler Boost Tube Kit
• Vehicle Fitment: 2008-2014 Subaru STI
• Engine: 2.5L Turbo H4 (EJ257)
• Drivetrain: AWD
• Construction: CNC Mandrel-Bent Aluminum
• Tube Diameter: 2.25 in. (hot side) to 2.75 in. (cold side)
• Finish: Red Textured Powder Coat
• Position: Front Mount Intercooler Charge Piping

Included Components

• 1x PERRIN Front Mount Intercooler Boost Tube Set (Red)
• 1x PERRIN Aluminum Coolant Overflow Tank
• 1x Boxed Steel Intercooler Support Beam
• 1x Silicone Coupler Kit
• 1x Hose Clamp Kit
• 1x Installation Hardware Kit
• 1x Installation Instructions

Product Description

The PERRIN PSP-ITR-430-3RD Front Mount Intercooler Boost Tube Kit is engineered specifically for 2008-2014 Subaru STI models equipped with the EJ257 2.5L turbocharged engine. Constructed from lightweight CNC mandrel-bent aluminum, the boost tubes feature a stepped design that transitions from 2.25 inches to 2.75 inches to improve airflow, reduce pressure loss, and support high-horsepower performance. The durable red textured powder-coated finish delivers long-lasting corrosion resistance while adding a distinctive appearance to the engine bay.

Designed exclusively for the PERRIN Front Mount Intercooler system, this kit includes the complete boost tube assembly, an aluminum coolant overflow tank, boxed steel support beam, silicone couplers, clamps, and installation hardware. The optimized routing provides excellent clearance around factory components while delivering reliable boost retention and consistent performance for demanding street and track applications.