Choosing the Right Spark Plugs for Your Turbo Honda
By PRL Motorsports - Premium Automotive Performance Products | Published: 2026-10-31
Category: Buying Guides
Learn how to pick the correct NGK Laser Iridium spark plug for your turbocharged Honda, with heat range and fitment guidance.
Quick answer
For most turbocharged Honda models (2017+ Civic 1.5T Si, 2018+ Accord 2.0T, 2019+ Acura RDX 2.0T) choose the NGK Laser Iridium ILZKAR8J8SY (Heat Range 8). For 2018+ Accord 1.5T or 2.0T variants, the DILKAR8P8SY (Heat Range 8) is the correct OE replacement.
Why Heat Range 8 Matters for Turbo Engines
Turbocharged engines run hotter than their naturally aspirated counterparts, especially under boost. Heat range 8 is a common spec from NGK for modern turbo Honda engines because it resists overheating and pre-ignition. Using a plug with too low a heat range can cause rapid electrode wear, while too high a range may not burn off deposits, leading to fouling. Both the ILZKAR8J8SY and DILKAR8P8SY are rated Heat Range 8, so they handle the thermal load of a turbo application.
ILZKAR8J8SY vs DILKAR8P8SY: What's Different?
The ILZKAR8J8SY is the direct replacement for Honda part 12290-5PA-A01 and fits the 2017-2021 Civic 1.5T Si, 2017+ CR-V 1.5T, 2018+ Accord 2.0T, and 2019+ Acura RDX 2.0T. The DILKAR8P8SY (Honda part 12290-6A0-A01) is specified for 2018+ Accord 1.5T and 2.0T models. Both are NGK Laser Iridium plugs and share the same core technology, but the physical dimensions or thread pitch may differ. Always verify your engine's OEM part number before ordering.
Decision rules for turbo Honda spark plugs
- Identify your engine and year: Check your vehicle's engine code and model year. The ILZKAR8J8SY fits most 2017-2021 Civic Si, CR-V, and 2018+ Accord 2.0T. The DILKAR8P8SY is for 2018+ Accord 1.5T and 2.0T.
- Match the OEM part number: Look up your original spark plug part number. ILZKAR8J8SY corresponds to Honda 12290-5PA-A01; DILKAR8P8SY corresponds to 12290-6A0-A01. Use the correct one to avoid thread or reach issues.
- Buy the quantity you need: Both products are sold as single plugs. A 4-cylinder turbo Honda needs four plugs. Order accordingly.
Product facts
- Honda / NGK Laser Iridium Spark Plug ILZKAR8J8SY Heat Range 8: Fits all 2017-2021 Civic 1.5T Si, 2017+ CR-V 1.5T, 2018+ Accord 2.0T, 2019+ Acura RDX 2.0T, and variant models including RHD and International Models. This single plug covers a wide range of popular turbo Honda models, making it a versatile and cost-effective choice at $10.72.
Honda / NGK Laser Iridium Spark Plug ILZKAR8J8SY Heat Range 8 - Genuine Honda (NGK) Laser Iridium Spark Plug DILKAR8P8SY Heat Range 8: Fits all 2018+ Accord 1.5T and 2.0T, including variant models. NGK Laser Iridium construction provides superior ignitability and long service life. If you own a 2018+ Accord, this is the direct OE replacement (Honda 12290-6A0-A01) and ensures proper fitment and performance.
Genuine Honda (NGK) Laser Iridium Spark Plug DILKAR8P8SY Heat Range 8
Who should choose which plug
Best for
- 2017-2021 Civic 1.5T Si owners wanting a direct replacement with wide compatibility
- 2018+ Accord 2.0T owners who prefer the ILZKAR8J8SY for its cross-model fit
Not for
- Naturally aspirated Honda engines that require a different heat range or thread pitch
