Blouch Dominator 4.0XT-R Full Ball Bearing Turbocharger

The WRX/STi Dominator 4.0XT-R features Blouch's new state-of-the-art 60 lb/min fully machined billet compressor wheel, a high efficiency Garrett GT turbine wheel, Garrett GT full ball bearing system, adjustable upgrade wastegate actuator calibrated at 19 PSI and their new 10cm2 bolt on turbine housing.



Blouch Performance Turbo was founded by Robert Blouch Sr. in February 1980. His son, Bob Jr., joined the business in 1990 and spearheaded the development of bolt-on upgrade turbos for the emerging four cylinder sport compact market. Blouch Performance Turbo offers a complete line-up of custom performance bolt-on upgrades for popular vehicles such as the Subaru WRX/STi , Mitsubishi EVO VIII, IX and X, Porsche 996 and 997, Mitsubishi 3000GT, and Dodge SRT4 and Caliber. The components used in these upgrades are state-of-the art such as fully machined billet compressors with advanced aero, custom turbine wheel and shaft assemblies, and custom compressor and turbine housing castings that are machined in-house on our own CNC equipment.

All test results indicate that, in addition to being lighter and stronger, the new Blouch "XT" compressor aerodynamics will outperform existing compressor wheel aero by producing more horsepower at lower boost pressures.

They combined this new billet aero with our new 10cm2 turbine housing to further reduce turbine inlet pressure and increase peak horsepower output.

These turbos are built to order, so please allow a few extra days for shipping.

NOTE: The Dominator 4.0XT-R is a bolt-on upgrade which requires a 3" inlet and TGV deletes. It requires no modification to oil feed, oil drain, coolant or exhaust connections for installation.

warning_symbolWARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

More Information
Product Type Intake and Exhaust
Intake and Exhaust Turbo and Components
Brand Blouch Turbo
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