The 2012 MDX uses iridium-tipped spark plugs, typically supplied by NGK or Denso as the OEM partners. The replacement interval is about 105,000 miles under normal driving; verify the exact part number for your VIN in the owner's manual or Acura’s parts catalog.
The MDX’s 3.5-liter V6 is designed for long-life, high-performance plugs. Because production regions and model specifications can influence the exact plug needed, it’s important to confirm the precise OEM specification for your vehicle before purchasing or installing replacements.
Understanding the spark plug type for the 2012 MDX
The engine in most 2012 MDX models is a 3.5L V6 (J35A). For this engine, the factory configuration uses iridium-tipped plugs to improve longevity and firing stability. NGK and Denso are the two most common OEM suppliers for Honda/Acura vehicles in various markets.
- Iridium-tipped plugs are standard for this engine family, offering longer service life and reliable ignition.
- NGK or Denso are the typical OEM providers; the exact brand can vary by region and production batch.
- Choose an OEM-grade iridium plug with the correct heat range and a gap close to the manufacturer specification.
These points explain why iridium plugs are used and how to choose a replacement that matches the factory configuration.
How to confirm the exact spark plug part number for your vehicle
Because part numbers can vary by market and VIN, use a VIN-based approach and official catalogs to locate the correct plug.
- Consult the owner's manual or the maintenance schedule for the recommended plug type and interval.
- Use the vehicle identification number (VIN) to locate the exact OEM part number in the official Acura/Honda parts catalog or a trusted parts retailer.
- Cross-check the catalog's NGK or Denso replacement numbers against the plugs currently in the car (if accessible) to ensure a match.
- Order an iridium-tipped plug with the specified heat range and confirm the recommended gap with the catalog; typical Acura/Honda gap is around 0.043 inches (1.1 mm) but verify for your exact plug.
Concluding note: By confirming the exact OEM part number using the VIN-based catalog, you ensure compatibility and maintain the MDX’s performance and efficiency during replacement.
What to know about aftermarket options
NGK and Denso remain the primary OEM suppliers, but aftermarket iridium plugs with the proper heat range and thread size can be used if they match the manufacturer’s specifications. Always verify compatibility with your VIN and the manufacturer’s gap and torque requirements.
Summary
The 2012 Acura MDX runs on iridium-tipped spark plugs, commonly supplied by NGK or Denso as the OEM choice. Replacement is typically around 105,000 miles; confirm the exact part number using the VIN and official catalogs to ensure a precise fit. When in doubt, consult a dealership or certified mechanic to source and install the correct plugs.