Feature	Details
Engine Code	J35Y5 (J-Series)
Displacement	3.5L (3,471 cc)
Cylinders	60° V6
Valvetrain	SOHC 24-Valve i-VTEC
Fuel Induction	Direct Injection (DI)
Horsepower	290 hp @ 6,200 rpm
Torque	267 lb-ft @ 4,500 rpm
Compression Ratio	11.5:1
Cylinder Deactivation	Variable Cylinder Management (VCM)

 

Vehicle Fitments

This JDM J35Y5 long block is designed for the following North American (USDM) models:

• 2016-2020 Acura MDX (Base, Technology, Advance, Entertainment)

• 2019-2020 Acura MDX A-Spec (Direct long block replacement)

Note: This engine is specifically for the 3.5L non-hybrid models.

Installation & Technical Notes

The J35Y5 is a sophisticated, direct-injected engine. To ensure a successful installation and maintain your warranty, please follow these technical guidelines:

• Long Block Conversion: This sale includes the engine block, cylinder heads, and internal components. You must transfer your original USDM intake manifold, fuel rail, direct injectors, wiring harness, and sensors. This ensures 100% compatibility with your vehicle’s ECU and emissions equipment.

• VCM Components: While the JDM J35Y5 features the same Variable Cylinder Management architecture, we recommend swapping your original VCM solenoid/spool valve if your USDM unit is known to be in good working order.

• Direct Injection Care: Ensure your original high-pressure fuel pump is cleaned and inspected before transferring it to the new engine. Any debris in the DI system can lead to immediate injector failure.

• Essential Maintenance: We strongly recommend replacing the following parts during the swap:

  • Timing Belt Kit: Replace the belt, water pump, and hydraulic tensioner (Interference Engine).

  • Spark Plugs: Use only NGK Laser Iridium (DILZKR7B11G) specifically for the J35Y5.

  • Engine Oil: 0W-20 Full Synthetic oil only.

  • Coolant: Genuine Acura/Honda Type 2 Blue Long Life Coolant.

• Transmission Pairing: Ensure the dowel pins are correctly aligned when mating the engine to the 9-speed ZF automatic transmission. Improper alignment can lead to front pump failure in the transmission.

• ECU Adaptation: After installation, use a professional-grade scan tool to perform a "CKP (Crank Pattern) Learn" and clear all VCM adaptation values so the computer can sync with the new rotating assembly.