The 2018 Honda Accord uses iridium-tipped spark plugs, with two possible configurations depending on the engine: a 1.5-liter turbo and a 2.0-liter turbo. The exact plug part numbers vary by engine and supplier; consult the owner's manual or a dealer for the precise OEM replacement plugs for your VIN.
Engine variants and plug types
Two turbocharged engines were available in the 2018 Accord, and both use modern iridium-tipped plugs designed for long life and efficient combustion. The exact plug part numbers can vary, so it’s important to verify for your specific vehicle.
- 1.5-liter turbocharged engine: Iridium-tipped spark plugs are standard; replacement intervals are typically around 105,000 miles under normal driving; OEM plugs are commonly sourced from NGK or Denso with Honda cross-refs.
- 2.0-liter turbocharged engine: Iridium-tipped spark plugs are standard; replacement intervals are similar to the 1.5L configuration (around 105,000 miles) under normal driving; OEM plugs typically come from NGK or Denso as equivalents.
In both engine options, Honda uses durable iridium plugs designed for longer life. Always verify the exact plug specification for your car by checking the owner’s manual or the dealer service data for your VIN.
Finding the exact part numbers for your car
To ensure you install the correct plugs, use one of these methods to identify the exact OEM part numbers for your 2018 Accord:
- Check the owner's manual or the Maintenance section for spark plug specifications and replacement intervals.
- Look at the under-hood label or the service data plate for engine-specific plug information.
- Ask a Honda dealer or pull the recommended plug numbers from the factory service data using your vehicle’s VIN.
- Consult reputable parts catalogs that offer Honda cross-references (NGK and Denso numbers are commonly provided as equivalents).
Finding the exact plug numbers ensures proper heat range, thread size, and reach for your engine. If in doubt, prefer OEM or manufacturer-approved equivalents.
Summary
The 2018 Honda Accord uses iridium-tipped spark plugs across its two turbo engines, with the exact part numbers varying by engine and supplier. Replacement intervals typically hover around 105,000 miles, but always confirm using your manual or a dealer’s service data for your VIN to ensure the correct plugs and specs.