CT26-GT3071R Turbo Upgrade for Toyota 3S-GTE Engines

Precision-engineered bolt-on turbocharger upgrade for Toyota 3S-GTE powered Celica GT4 (ST185, ST205) and MR2 Turbo (SW20) platforms. Direct replacement for CT20B and CT26 twin-scroll turbos with enhanced billet compressor wheels, configurable turbine options, and complete installation hardware for Gen 2 and Gen 3 engine variants.

Vehicle Compatibility

Toyota Celica GT4:

• 1989.9 – 1993.10 Celica ST185 (3S-GTE)
• 1991.10 – 1992.4 Celica ST185RC (3S-GTE)
• 1994.2 – 1999.8 Celica ST205 (3S-GTE)

Toyota MR2 Turbo (SW20):

• 1989.12 – 1993.11 SW20 Series 1 & 2
• 1993.12 – 1999.8 SW20 Series 3
• 1990–1993 MR2 Turbo (North America 1991–1995)
• 1993+ MR2 Turbo (Japan)

Engine Code: Toyota 3S-GTE / 3SGTE (all generations compatible with CT20B or CT26 twin-scroll turbo)
Fitment Note: Custom housing bolts to stock manifold and downpipe — compatible with aftermarket downpipes and intercoolers designed for CT2x turbos (CT26/CT20B/CT21/CT27).

CT20B 7-bolt to CT26 6-bolt turbine housing outlet swap: cut or omit the extra stud for compatibility.

⚠ Important: Does NOT fit Generation 4 (ST215) or Generation 5 (ST246) — these use an exhaust housing cast into the cylinder manifold, incompatible with this turbo's separate turbine housing design.

Engineering Specifications

Core Assembly: CT26-GT3071R with journal bearing system, dual oil and water cooling
Compressor Wheel: 53.1 / 71.0mm billet construction
• 6+6 blade design optimized for low-end torque response
• 11+0 blade design engineered for top-end airflow and speed
Turbine Wheel: 51.9 / 67.9mm available in two configurations — explore STS technology↗
• 10 Blades STD — stock-style response
• 9 Blades STS — Superior Turbine Strike for improved spool and durability
Compressor Housing: Bolt-on stock type
Turbine Housing: Bolt-on stock type with internal wastegate
Wastegate Actuator: 1.0 bar (14.7 PSI) default
• Available spring rates: 0.3, 0.5, 0.8, 1.2, 1.5, 1.7, 2.0 bar (specify at checkout or contact us)

Generation Selection Guide

Choose the correct generation to match your engine's oil feed fitting:

• Gen 2 — M18×1.5 oil feed fitting (ST185, SW20 Series 1 & 2)
• Gen 3 — M12×1.25 oil feed fitting (ST205, SW20 Series 3)

Gen 2 Install Kit Reference

Gen 3 Install Kit Reference

Complete System Includes

• 1 × CT26-GT3071R turbocharger assembly
• 1 × Turbine inlet gasket
• 1 × Turbine outlet gasket
• 1 × Oil feed and return gasket
• 2 × Water coolant gaskets
• 10 × Stud and nut set
• 1 × 20cm vacuum hose
• 1 × Balance report with anti-counterfeit verification tag↗

Performance Notes

Maximum power stated for each turbocharger has been calculated based strictly on the choke flow of the compressor map (total turbo capability), representing the potential flywheel power. Actual performance results depend highly on your vehicle's modifications and tuning/calibration.

Quality Assurance & Coverage

Condition: Factory-new assembly
Balancing: Complete CHRA balanced using SCHENCK MBRS 110 precision equipment (Germany)
Manufacturing Origin: Taiwan | HS Code: 841199
Warranty Protection: 1-year Kinugawa Trouble-Free Warranty covering free overhaul, reconditioning, or replacement from original purchase date. Complete peace of mind regardless of failure cause.