There isn’t a single brand; Acura uses NGK or Denso depending on the engine and model.
Across its lineup, Acura generally relies on two primary spark plug suppliers common in the Honda family—NGK and Denso. The exact brand for a given vehicle is determined by the engine code, production year, and regional sourcing. To be certain, reference the owner's manual or Acura's official parts catalog or check with a dealership for the precise part number.
Two main brands you’re likely to encounter in Acura engines
Below are the spark plug brands you will most commonly see in Acura models, along with the typical plug families they supply.
- NGK: A frequent OEM supplier for many Acura/Honda engines, offering iridium, platinum, and copper options (e.g., Iridium IX and Laser Iridium lines).
- Denso: Another large OEM supplier for various Acura engines, with iridium and platinum lines such as Iridium TT and related performance-focused options.
In practice, many Acura engines will list either NGK or Denso as the recommended OEM in the service manual, parts catalogs, or on under-hood labels.
How to determine the exact spark plug for your Acura
To ensure you order the correct plug, follow these steps. This list helps you confirm the exact brand and part number for your vehicle.
- Consult your owner's manual or the Honda/Acura service manual for the recommended spark plug brand and part number for your engine code.
- Check any original equipment labeling under the hood or in service records to see which brand is specified.
- Use your VIN on the Acura Parts Website or at a dealership to pull the exact OEM plug for your car.
- Inspect the current spark plug if replacing old plugs and look for brand markings or part numbers stamped on the shell.
- Ask a certified Acura technician or your local dealer to confirm the correct brand and gap for your engine variant.
Following these steps reduces the risk of installing the wrong plug and helps preserve engine performance and reliability.
Engine families and typical plug types (guidance)
While the exact brand and model vary by engine, you’ll often find NGK or Denso as the OEM source in modern Acura engines. The choice depends on the engine family and regional supply decisions; always verify with documentation for your specific vehicle.
Summary
Acura does not rely on a single spark plug brand. Depending on the engine, year, and market, the OEM plugs are typically NGK or Denso. To be sure, consult your owner's manual, service manual, or Acura’s official parts catalog using your vehicle’s VIN, or confirm with a dealer for the exact part number and gap specification.
Who makes spark plugs for Acura?
Spark Plugs for Acura
Engineered for consistent performance, trusted brands like NGK, DENSO, and Champion deliver smooth ignition and long-lasting durability. Keep your Acura running at its peak with these exceptional options.
What is better, Denso or NGK?
Key Differences:
NGK spark plugs are particularly touted for their strong performance in high-speed, high-stress scenarios such as racing or heavy-duty driving. Denso, on the other hand, shines in everyday driving conditions, particularly emphasizing fuel efficiency and engine smoothness.
What does Honda recommend for spark plugs?
For Honda engines we recommend only using NGK/Denso spark plugs. Using other spark plugs like Bosch, Autolite, etc has been the cause of countless ignition misfires that we've seen which could have easily been eliminated by using NGK/Denso plugs. Why?
What brand is Acura OEM?
Wondering who makes Acura cars? Although the brand is separate, Honda makes Acura vehicles, which is why you will find high-quality OEM parts and service accompanied with excellent handling.