Perrin Front Mount Intercooler w/ Boost Tube Piping Kit 2015-2021 STI

Perrin Front Mount Intercooler w/ Boost Tube Piping Kit 2015-2021 STI | 3/8" Bar & Plate Core | Front Mount Intercooler Kit

Overview

The Perrin Front Mount Intercooler (FMIC) with Boost Tube Piping Kit is designed specifically for the 2015-2021 Subaru WRX STI to replace the factory top mount intercooler. This upgrade addresses the common issue of heat soak and restrictive airflow in the stock intercooler, delivering significantly cooler intake charge temperatures and improved turbo efficiency. Ideal for enthusiasts looking to maximize power output and reliability on both street and track, this kit combines performance gains with a bold, aggressive front-end appearance.

Engineered with a focus on durability and optimal cooling, the Perrin FMIC features a 3/8” bar and plate core design that surpasses the factory tube and fin style in both strength and thermal efficiency. The larger core size and thicker bar spacing allow for better airflow and heat dissipation, reducing intake air temperatures by approximately 40°F under testing conditions. Constructed with powder-coated aluminum and reinforced steel support beams, this intercooler kit is built to withstand the rigors of spirited driving and road debris without compromising performance.

For Subaru WRX STI owners, this front mount intercooler kit not only improves power potential by reducing charge air temperatures and pressure drop but also enhances the overall driving experience by supporting consistent turbo response and reliability. The included boost tubes and silicone couplers ensure smooth airflow transitions, while the additional coolant overflow and washer fluid tanks provide improved engine bay clearance. This comprehensive kit is a practical and effective upgrade for anyone serious about extracting more from their turbocharged STI.

Features & Specifications

This Perrin Front Mount Intercooler Kit is engineered for the 2015-2021 Subaru WRX STI and features a robust 3/8” bar and plate core measuring 28” x 9.25” x 3.5”. Constructed from powder-coated aluminum and boxed steel, it delivers superior cooling efficiency and durability for Subaru enthusiasts seeking reliable power gains and improved intake charge temperatures.

• Brand: Perrin Performance
• Product: Front Mount Intercooler w/ Boost Tube Piping Kit 2015-2021 STI
• Part Number: P-FMIC-15STI-SL-2BK/BK
• Fitment: Subaru WRX STI (2015-2021)
• Material: Aluminum (core and piping), Boxed Steel (support beams)
• Finish: Black powder coat
• Construction: Bar and plate core, CNC mandrel bent boost tubes, powder coated
• Origin: USA (Perrin Performance)
• Core Dimensions: 28" L x 9.25" H x 3.5" D
• Core Volume: 906.5 cubic inches
• Core Design: 3/8" bar and plate style
• Pressure Tested: 50 psi
• Included Components: Boost tubes, coolant overflow tank, silicone couplers, clamps, license plate frame, stencil

Key Benefits

• Performance: Reduces intake charge temperatures by approximately 40°F, improving turbo efficiency and power output.
• Durability: Bar and plate core design resists damage from road debris better than factory tube and fin intercoolers.
• Fitment: Designed specifically for 2015-2021 WRX STI with included hardware and tanks for seamless installation and clearance.
• Cooling Efficiency: Larger core volume and thicker bar spacing optimize heat dissipation and reduce pressure drop.
• Quality: Powder-coated aluminum and boxed steel construction ensure long-lasting corrosion resistance and strength.
• Aesthetics: Aggressive front mount intercooler appearance enhances the STI’s engine bay and front-end look.

What's Included

• 1× Perrin Front Mount Intercooler Core with Bumper Beam
• 1× Set of Perrin Boost Tubes (CNC mandrel bent aluminum)
• 1× Perrin Coolant Overflow Tank (black textured powder coat)
• 1× Set of Clamps
• 1× Set of Perrin Silicone Couplers
• 1× Perrin License Plate Frame
• 1× Perrin Intercooler Stencil
• All necessary installation hardware
• Installation instructions

Installation & Compatibility

Installation of the Perrin Front Mount Intercooler Kit requires moderate mechanical skill and basic hand tools. While the kit includes all necessary hardware and detailed instructions, professional installation is recommended for those unfamiliar with front bumper removal and intercooler plumbing. No major modifications are required, but verify compatibility with your specific STI model year and trim. Tuning is recommended after installation to optimize performance and ensure safe air/fuel ratios due to changes in intake air temperature and flow characteristics.

• Professional Installation: Recommended
• Modifications Required: None
• Verify Compatibility: Confirm fitment for 2015-2021 Subaru WRX STI models

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