Blouch Performance Turbo TD05H-18G-XT Turbocharger 2002-2007 WRX / 2004-2021 STI

Blouch Performance Turbo TD05H-18G-XT Turbocharger 2002-2007 WRX / 2004-2021 STI | 430HP Capability | High-Flow Turbocharger

Overview

The Blouch Performance Turbo TD05H-18G-XT is a high-performance turbocharger designed specifically for Subaru WRX and WRX STI models from 2002 to 2021. Engineered to support up to 430 horsepower at the crank, this turbocharger is ideal for enthusiasts seeking a significant power upgrade without sacrificing spool time or drivability. It delivers a balanced combination of quick spool, strong mid-range torque, and robust top-end power, making it a versatile choice for street and track applications alike.

Blouch Turbos are renowned for their precision engineering and use of advanced materials and manufacturing techniques. The 18G-XT features a billet compressor wheel crafted from closed-die forged aluminum, which is both lighter and stronger than traditional cast wheels. This, combined with a custom CNC-machined compressor housing and a water-cooled journal bearing center housing, results in improved efficiency, reliability, and thermal management. The turbine side offers multiple housing options to tailor spool characteristics and flow to your specific build.

For Subaru owners, the TD05H-18G-XT turbocharger represents a well-rounded upgrade that enhances the driving experience by delivering responsive boost and sustained power across the rev range. Its compatibility with factory and aftermarket components ensures a smooth integration into your existing setup, while the included coolant line package simplifies installation. Whether you’re building a high-output street car or a track-focused machine, this turbocharger provides the performance foundation to reach your goals.

Features & Specifications

This Blouch Performance Turbo TD05H-18G-XT turbocharger is engineered for Subaru WRX and WRX STI platforms, featuring a billet compressor wheel and water-cooled journal bearing center housing. Constructed from forged aluminum and precision-machined components, it delivers quick spool and high flow capacity for Subaru enthusiasts seeking up to 430 horsepower.

• Brand: Blouch Performance Turbo
• Product: TD05H-18G-XT Turbocharger
• Part Number: N/A
• Fitment: 2002-2007 Subaru WRX / 2004-2021 Subaru WRX STI
• Material: Forged Aluminum (Compressor Wheel), High-Grade Steel (Turbine)
• Finish: Natural Machined
• Construction: CNC Machined Compressor Housing, Closed-Die Forged Compressor Wheel, Water-Cooled Journal Bearing Center Housing
• Origin: Manufactured by Blouch Turbo (USA)
• Power Gains: Up to 430 HP Crank
• Tuning Required: Recommended
• Turbine Housing Options: 7cm², 8cm², 10cm²
• Compressor Inlet Option: 3" Bell Mouth
• Included Accessories: Upgrade Actuator, Drain Tube and Coolant Line Package with Gaskets

Key Benefits

• Performance: Supports up to 430 horsepower with quick spool and strong mid-range torque for versatile driving.
• Durability: Water-cooled journal bearing center housing improves thermal management and longevity under high boost conditions.
• Fitment: Custom compressor housing and multiple turbine housing sizes ensure precise fit and tailored spool characteristics for WRX and STI models.
• Quality: CNC-machined and forged components provide superior strength and efficiency compared to cast alternatives.
• Value: Complete bolt-on package includes actuator and coolant lines, simplifying installation and reducing additional parts sourcing.
• Tuning Flexibility: Compatible with a wide range of supporting modifications and tuning strategies to optimize power delivery.

What's Included

• 1× Blouch Performance Turbo TD05H-18G-XT Turbocharger
• 1× Upgrade Actuator
• Complete Drain Tube and Coolant Line Package with Gaskets

Installation & Compatibility

Installation of the Blouch TD05H-18G-XT turbocharger is moderately complex and generally recommended for experienced enthusiasts or professional shops familiar with Subaru turbo systems. The kit includes all necessary coolant lines and gaskets for a clean, bolt-on installation, but specialized tools and knowledge of turbo plumbing and tuning are required. Tuning is strongly recommended to optimize performance and ensure engine safety when upgrading to this turbocharger. Compatibility is confirmed for 2002-2007 Subaru WRX and 2004-2021 Subaru WRX STI models; verify your specific year and trim before purchase to ensure proper fitment.

• Professional Installation: Recommended
• Modifications Required: Tuning required; possible supporting mods depending on build
• Verify Compatibility: Confirm fitment for your specific year and trim level

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