2004-2008 Acura TSX 2.4L K24A RBB 3-Lobe VTEC Engine & 6 Speed Manual Transmission JDM

About this unit

JDM to USDM Installation & Swap Guide

To ensure 100% compatibility and a seamless “first-turn” start in your TSX, professional Honda technicians recommend the following “Integration” steps:

1. Intake & Exhaust Manifolds: You must transfer your original USDM Intake Manifold and Exhaust Manifold. JDM versions may lack specific emissions bungs or vacuum ports required for North American OBDII systems.

2. Wiring Harness: Always retain and use your original USDM Engine Wiring Harness. JDM harnesses are configured for right-hand drive and will not interface with your TSX’s chassis bulkheads or ECU location.

3. Engine Sensors: Transfer your original USDM Crankshaft Position Sensor and Knock Sensor. JDM sensors often have different plug styles; using your original “known-good” sensors ensures the harness plugs in perfectly.

4. Water Housing: Swap your original USDM Water Outlet and Thermostat Housing to ensure all radiator and heater hoses align perfectly with your North American cooling system.

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.