Perrin Front Mount Intercooler Boost Tube Kit Black 2015-2021 WRX | 2.25"-2.75" Diameter | Aluminum Boost Tubes
Overview
The Perrin Front Mount Intercooler Boost Tube Kit is a precision-engineered upgrade designed specifically for the 2015-2021 Subaru WRX. It replaces the restrictive OEM boost tubes with smooth, mandrel-bent aluminum piping that optimizes airflow from the turbocharger through the intercooler to the throttle body. This kit is ideal for Subaru enthusiasts aiming to improve boost response, reduce pressure drop, and unlock additional power potential while maintaining reliable fitment and durability.
Crafted with CNC mandrel bending, the boost tubes feature a stepped diameter design, starting at 2.25 inches at the turbo outlet and expanding to 2.75 inches near the throttle body. This gradual increase ensures a smooth, unrestricted airflow path that enhances charge air cooling efficiency without interfering with surrounding OEM components. The black powder coat finish not only protects against corrosion but also provides an OEM+ aesthetic that blends seamlessly under the hood.
Beyond the boost tubes themselves, this kit includes direct-mount intercooler brackets, a high-capacity 6061 aluminum washer fluid tank, and a textured powder-coated coolant overflow tank to facilitate proper routing and clearance. Dyno testing confirms gains of 10 to 20+ wheel horsepower without requiring ECU tuning, making this a practical and effective upgrade for WRX owners seeking improved throttle response and reliable power gains.
Features & Specifications
This Perrin Front Mount Intercooler Boost Tube Kit is engineered for 2015-2021 Subaru WRX models and features a stepped diameter design from 2.25” to 2.75” for optimized airflow. Constructed from lightweight aluminum with a black powder coat finish, it delivers improved boost efficiency and durability for Subaru enthusiasts seeking increased horsepower and reliable fitment.
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Brand: Perrin Performance
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Product: Front Mount Intercooler Boost Tube Kit Black
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Part Number: PSP-ITR-437-3BK
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Fitment: 2015-2021 Subaru WRX
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Material: Aluminum
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Finish: Black powder coat
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Construction: CNC mandrel bent tubing
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Origin: Not specified
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Boost Tube Diameter: 2.25” (turbo outlet) to 2.75” (throttle body)
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Included Components: Coolant overflow tank, washer fluid tank, direct-mount intercooler brackets
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Power Gains: +10-20+ Wheel HP (dyno proven)
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Tuning Required: No tuning required, but recommended for additional gains
Key Benefits
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Performance: Enhanced airflow reduces pressure drop, improving boost response and power delivery for the WRX turbo system.
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Durability: Powder-coated aluminum tubing resists corrosion and maintains strength under sustained boost pressures.
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Fitment: Designed specifically for 2015-2021 WRX with direct-mount brackets and clearance-friendly routing for a clean OEM-style installation.
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Ease of Installation: Includes all necessary components for a bolt-on upgrade with no cutting or trimming required.
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Value: Delivers 10-20+ wheel horsepower gains without immediate ECU tuning, offering a practical power improvement.
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Aesthetics: Black powder coat finish provides a sleek, factory-inspired look under the hood that complements Subaru’s engine bay.
What's Included
- 1× Perrin Front Mount Intercooler Boost Tube Kit Black
- 1× Perrin Coolant Overflow Tank (powder coated)
- 1× 6061 Aluminum High Capacity Washer Fluid Tank
- Direct-mount CNC-machined aluminum intercooler brackets
- Installation instructions
Installation & Compatibility
Installation of the Perrin Boost Tube Kit is moderately straightforward for enthusiasts with basic mechanical skills and common hand tools. The kit is designed for direct bolt-on fitment with no cutting or trimming required, aided by included mounting brackets and tanks for proper clearance. While no ECU tuning is necessary to realize power gains, tuning is recommended to maximize performance and ensure safe operation if additional modifications are present. Always verify compatibility with your specific WRX model year and trim before installation.
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Professional Installation: Recommended for best results
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your specific 2015-2021 WRX model
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