2012 - 2019 Toyota Prius C 1.5L Inline-4 DOHC Hybrid Engine JDM 1NZ-FXE

Vehicle Fitment

This JDM 1NZ-FXE hybrid long block serves as a replacement for the following USDM 1.5L 4-cylinder hybrid models:

• 2012–2019 Toyota Prius C (Base, One, Two, Three, Four, Persona Series)

Important Note: This engine is the 1NZ-FXE Hybrid (Atkinson cycle). It is not interchangeable with non-hybrid 1.5L engines (standard 1NZ-FE) found in the Toyota Yaris, Echo, or Scion xA/xB

USDM to JDM Swap Guide (Prius C 1NZ-FXE Hybrid)

Installing a JDM 1NZ-FXE engine into a USDM Toyota Prius C requires using the imported Japanese motor as a bare long block. Japanese right-hand drive (RHD) wiring, sensors, and emissions setups differ from US requirements, so transferring your USDM components guarantees a plug-and-play installation with zero Check Engine Lights (CEL).

1. Strip JDM Engine Down to Long Block: Preparation.

Unbolt all Japanese external wiring, sensors, water pump/thermostat housings, and intake/exhaust manifolds from the JDM engine block. Clean all block surfaces thoroughly.

Verification: Confirm the JDM engine is stripped down to the bare cylinder head, block, timing cover, and oil pan assembly.

2. Transfer USDM Intake Manifold & Exhaust Assembly: Intake & Emissions Setup.

Unbolt your original USDM intake manifold (including throttle body, EGR valve assembly, and vacuum lines) and exhaust manifold, then transfer them onto the JDM engine using fresh gaskets.

Verification: Visually inspect intake and exhaust mounting surfaces to ensure a 100% airtight seal with no potential vacuum leak paths.

3. Swap USDM Engine Wiring Harness & Sensors: Electronics & Sensors.

Do NOT attempt to use the JDM engine wiring harness. Unbolt your vehicle's original USDM engine harness and transfer it along with the following sensors onto the JDM engine:

• Camshaft and Crankshaft Position Sensors

• VVT-i Oil Control Valve

• Coolant Temperature Sensors & Knock Sensor

• Electric Water Pump assembly & thermostat housing

Verification: Plug in every connector from your USDM harness to ensure a 1:1 match without stretching any wiring.

4. Install USDM Flywheel / Dampener Plate: Drivetrain & Dampener Prep.

Unbolt the JDM rear driveplate. Inspect the rear main oil seal for seepage (replace if necessary). Transfer your original USDM flywheel/dampener plate (which links the engine to the transaxle input damper) using fresh threadlocker on the bolts.

Verification: Torque flywheel bolts to factory specification in a star pattern and rotate the crankshaft 360 degrees by hand to verify smooth movement.

5. Refill Fluids, Hybrid System Re-engagement & Initial Startup: Final Installation.

1. Bolt the engine securely to the hybrid transaxle (eCVT) and engine mounts.

2. Fill with fresh 0W-20 engine oil and genuine Toyota Super Long Life Coolant (pink).

3. Reinstall the high-voltage battery service disconnect plug properly into the locked position.

4. Bleed trapped air from the engine cooling system using a funnel setup.

Verification: Turn ignition to "READY" mode, verify smooth engine cycling, and ensure no hybrid system fault codes or Check Engine Lights (CEL) appear on the dashboard.