2004-2007 Toyota Caldina 5th Gen 2.0L 4 Cylinder Turbo Engine JDM 3S-GTE ST246

About this unit

Vehicle Fitment

This engine is a direct replacement or popular performance swap for the following models:

• Toyota Caldina GT-Four (ST246): 2002, 2003, 2004, 2005, 2006, 2007

• Toyota MR2 (SW20): Popular high-performance swap (Requires wiring and mount adjustment)

• Toyota Celica All-Trac/GT-Four: Popular modern upgrade for ST185 and ST205 chassis

• Compatibility Note: As a JDM-exclusive engine, North American installations into non-Caldina chassis are considered “custom swaps” and will require an aftermarket ECU or a merged wiring harness to accommodate the Gen 5’s electronic differences.

JDM 3S-GTE Installation & Swap Guide

To ensure a successful installation of the Caldina 5th Gen engine, professional Toyota technicians recommend the following “Integration” steps:

1. Turbocharger Configuration: The Gen 5 uses a proprietary integrated turbo and exhaust manifold. If you are swapping this into an MR2, ensure you have adequate firewall clearance or utilize a custom downpipe.

2. Ignition System: Unlike earlier 3S-GTEs, the Gen 5 features Coil-on-Plug (COP). You must use the Caldina ECU or a standalone engine management system (like Link or Haltech) to control the ignition timing correctly.

3. Wiring Harness: Retain the JDM engine harness for the sensor connectors, but you will likely need a hassis-specific patch harness to interface with your North American MR2 or Celica body plugs.

4. Oil Pan: Inspect the JDM oil pan. If swapping into an MR2, you may need to swap to an MR2-specific 3S-GTE Oil Pan to ensure correct oil pickup and crossmember clearance.

5. Intercooler: The Caldina comes with a Top-Mount Intercooler (TMIC). For MR2 swaps, most builders convert to a side-mount or front-mount intercooler (FMIC) setup due to the rear-engine layout.

6. Fuel System: Ensure your fuel pump is capable of supporting 260+ HP. We recommend a high-flow 255 LPH pump for all turbocharged 3S-GTE swaps.

What is included

You receive exactly what is pictured. Engines are supplied as a long block assembly with the components visible in the photos. Accessories such as the alternator, starter, intake manifold or sensors are included only where you can see them on the unit, so check the photographs before ordering and ask us if anything is unclear.

Before you order

• Confirm the engine code against your own vehicle, not just the model year.
• Japanese market units can differ from the US version in intake, loom and sensors.
• Replace the timing components, water pump and seals while the unit is out. It is cheap insurance on an engine this age.
• Keep your original accessories until the swap is finished and running.