Boost Lab TD05H-20G Turbocharger | High-Performance OEM Upgrade for Subaru WRX & WRX STi (400HP)

Fits:

• 2004-2021 Subaru WRX STi (EJ25)
• 2004-2007 Subaru WRX (EJ20)

Upgrade your 2004-2021 Subaru WRX STi (EJ25) or 2004-2007 Subaru WRX (EJ20) with the Boost Lab TD05H-20G Billet Turbocharger. Engineered for superior street performance and high-power output, this 400HP turbo upgrade delivers the perfect blend of quick throttle response and top-end power. Whether you’re daily driving or hitting the track, the TD05H-20G is the ultimate OEM replacement turbo that boosts your Subaru's power and performance.

This turbocharger features Boost Lab's exclusive 6-blade billet compressor wheel for maximum airflow and efficiency. Paired with an upgraded 360° thrust bearing, this turbo is designed to withstand extreme driving conditions. Running pump gas, race fuel, or E85, the TD05H-20G can push beyond 400HP, making it a versatile choice for Subaru performance enthusiasts. For those aiming for even more power, upgrading to the TD06SL2-20G model is recommended.

Key Features:

• 6-Blade 20G Billet Compressor Wheel for enhanced airflow and efficiency
• Performance TD05H Turbine Wheel for optimized top-end power
• 8cm² Turbine Housing for balanced spool and power delivery
• 360° Thrust Bearing upgrade for extreme durability under high stress
• 1 Bar Wastegate Actuator for precise boost control
• Complete Installation Kit with gaskets, downpipe studs, and nuts for an easy installation

Backed by Boost Lab’s commitment to quality and performance, delivering reliable power gains for your Subaru WRX or WRX STi

Why Choose Boost Lab TD05H-20G?

• Street & Track Performance: Achieve responsive throttle at lower RPMs while benefiting from increased top-end power. Perfect for daily driving and weekend track days.
• Extreme Durability: The upgraded 360° thrust bearing ensures longevity and reliability under aggressive driving or racing conditions.
• Flexible Fuel Options: Whether you're running on pump gas, race fuel, or E85, this turbo delivers powerful performance across all fuel types.

Upgrade your Subaru WRX or WRX STi with the Boost Lab TD05H-20G Turbocharger and experience the perfect balance of street drivability and race-ready power.

Additional Info

2618 Billet Aluminum Compressor Wheel

Boost Lab’s turbochargers feature a 2618 billet aluminum compressor wheel, precision-milled to maximize airflow. This high-strength material is engineered for optimal performance under extreme stress, ensuring top-tier performance in high-power applications.

Assembled in Tampa, FL

All Boost Lab turbochargers are meticulously assembled in Tampa, FL, ensuring the highest level of craftsmanship and quality for every unit we produce.

VSR Balancing

As a critical step in our build process, each turbocharger undergoes precision VSR (Vibration Sorting Rig) balancing using one of our Turbo Technics VSR balancing units. This essential process controls the turbo's vibration levels, reducing noise and significantly extending bearing life. More importantly, excessive vibration places undue stress on the turbo’s bearings, potentially leading to premature failure. By reducing vibration to safe levels, VSR balancing ensures your turbocharger operates quietly and reliably, without overloading its bearings.

Learn more about VSR balancing and why it's essential in proper turbocharger building practices. 

Talk with an Expert

At Boost Lab, you'll speak directly with our hands-on turbocharger experts. With over 35 years of combined turbocharger knowledge, we’re here to provide you with the best advice and support for your performance needs.

Custom Solutions

Boost Lab offers tailored solutions for various applications, ensuring you receive the perfect match for your specific performance goals. 

Explore More Turbo Options

Discover our full lineup of Subaru Performance Turbochargers, crafted to meet a wide variety of performance needs across different platforms and applications.