Toyota Caldina 4th Gen 2.0L 4 Cylinder Turbo Engine JDM 3S-GTE ST246 MR2 Celica

About this unit

Vehicle Fitment & Swap Potential

This engine is a direct replacement for the JDM ST246 Caldina and a legendary performance swap for:

• Toyota MR2 (SW20): The most popular “modern” swap for Turbo and NA chassis.

• Toyota Celica (ST185 / ST205): Ideal for GT-Four replicas and All-Trac restorations.

• Toyota RAV4 (First Gen): A high-performance “sleeper” swap favorite.

• Note: For swap applications, aftermarket motor mounts, wiring harness conversion, and custom intercooler piping are typically required.

JDM to USDM Swap & Installation Guide

If you are swapping this 4th Gen 3S-GTE into an older MR2 or Celica, professional installers recommend the following “Conversion” steps:

1. Wiring Harness: You will need a Conversion Harness (such as WireGap or Panic Made) to interface the Caldina 3S-GTE ECU with your North American chassis.

2. Engine Mounts: When swapping into an MR2, you must use your original MR2 Passenger Side Engine Mount Bracket for proper alignment.

3. Speedometer: Since the ST246 Caldina uses an electronic speed signal from the ABS, you may need to install a Mechanical Speedo Gear into the transmission for older cable-driven speedometers.

4. Intercooler: The Caldina comes with a Top-Mount Intercooler (TMIC). Most MR2 swappers convert this to a Side-Mount (SMIC) or Front-Mount (FMIC) configuration to clear the engine lid.

5. Oil Pan: If clearance is an issue in specific chassis, swap your original 3S-GTE Oil Pan and Pickup, though the Caldina pan is generally preferred for its baffling.

6. Fuel System: This engine uses a Top-Feed Fuel Rail. Ensure your fuel pump and pressure regulator are rated for the 4th Gen’s specific flow requirements.

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.