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 designed specifically for the 2015-2021 Subaru WRX to optimize airflow between the turbocharger, intercooler, and throttle body. This kit replaces restrictive OEM boost tubes with smooth, mandrel-bent aluminum piping that enhances boost response and reduces pressure drop. It’s ideal for Subaru enthusiasts looking to improve charge air cooling efficiency and unlock additional power potential without compromising reliability or fitment.

Engineered with precision CNC mandrel bending, Perrin’s boost tubes feature a diameter progression from 2.25 inches at the turbo outlet to 2.75 inches near the throttle body. This design ensures a smooth, unrestricted airflow path while maintaining clearance around OEM components for a clean installation. The tubes are finished with a durable black powder coat that resists corrosion and maintains an OEM+ appearance under the hood.

Included with the boost tubes are direct-mount intercooler brackets, a high-capacity 6061 aluminum washer fluid tank, and a textured powder-coated coolant overflow tank. These components facilitate proper routing and clearance, contributing to the overall performance gains. Dyno testing confirms a gain of 10 to 20+ wheel horsepower with no ECU tuning required, making this kit a practical upgrade for WRX owners seeking reliable power improvements and enhanced throttle response.

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.

• Brand: Perrin Performance
• Product: Front Mount Intercooler Boost Tube Kit Black
• Part Number: PSP-ITR-437-3BK
• Fitment: 2015-2021 Subaru WRX
• Material: Aluminum
• Finish: Black powder coat
• Construction: CNC mandrel bent tubing
• Origin: Not specified
• Boost Tube Diameter: 2.25” (turbo outlet) to 2.75” (throttle body)
• Included Components: Coolant overflow tank, washer fluid tank, direct-mount intercooler brackets
• Power Gains: +10-20+ Wheel HP (dyno proven)
• Tuning Required: No tuning required, but recommended for additional gains

Key Benefits

• Performance: Increased airflow reduces pressure drop, improving boost response and power delivery.
• Durability: Powder-coated aluminum tubing resists corrosion and maintains strength under boost.
• Fitment: Designed specifically for 2015-2021 WRX with direct-mount brackets and clearance-friendly routing.
• Ease of Installation: Includes all necessary components for a clean, OEM-style installation without modifications.
• Value: Gains 10-20+ wheel horsepower without requiring immediate ECU tuning.
• Aesthetics: Black powder coat finish offers a sleek, factory-inspired look under the hood.

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.

• Professional Installation: Recommended for best results
• Modifications Required: None
• Verify Compatibility: Confirm fitment for your specific 2015-2021 WRX model

Shop with confidence at Subimods—your Subaru parts specialists.