NGK Spark Plug ILZKAR8H8S – Equivalent to Honda OEM 12290-59B-003

NGK ILZKAR8H8S is a premium iridium laser spark plug designed specifically for modern turbocharged Honda engines. It ensures reliable ignition, stable combustion, and maximum performance under all driving conditions – from everyday use to demanding high-load operation.

Product specifications

• Manufacturer: NGK – world leader in ignition technology
• Part number: ILZKAR8H8S
• Equivalent OEM: Honda 12290-59B-003
• Electrode material: Iridium / Platinum
• Thread size: M12
• Thread reach: 26.5 mm
• Gap: 0.8 mm (pre-set from factory)

NGK Iridium Laser spark plugs combine precision manufacturing with advanced electrode materials to provide exceptional durability and superior spark efficiency. The iridium center electrode delivers consistent ignition, improved fuel efficiency, and reduced emissions – even in high-performance engines.

Applications

The NGK ILZKAR8H8S spark plug fits the following Honda models equipped with turbocharged petrol engines:

• Honda Civic 4D (2017–2021) – 1.0 Turbo, 1.5 Turbo, engines P10A4, L15B7, L15B8
• Honda Civic 5D (2017–2021) – 1.0 Turbo, 1.5 Turbo, engines P10A2, L15B7
• Honda Civic Type-R (2015–2021) – engine K20C1

Whether you drive a standard Civic or the powerful Type-R, NGK ILZKAR8H8S ensures optimum ignition performance, smoother engine operation, and dependable reliability. It’s the same level of quality trusted by Honda for factory installation.

Why choose NGK ILZKAR8H8S?

• OEM-quality replacement – fully compatible with Honda 12290-59B-003
• Iridium-platinum technology for extended lifespan and cleaner combustion
• Precise fitment – no adjustment required, plug & play installation
• Stable ignition under high temperature and turbo boost conditions
• Improved fuel economy and lower emissions

FAQ – Frequently Asked Questions

Can NGK ILZKAR8H8S replace Honda 12290-59B-003?
Yes. NGK ILZKAR8H8S is a direct equivalent to the genuine Honda spark plug 12290-59B-003, used as factory equipment in many Civic models.

How often should I replace NGK ILZKAR8H8S spark plugs?
Recommended replacement interval is every 100,000 – 120,000 km under normal conditions. For turbocharged engines or performance driving, inspection every 60,000 km is advised.

Do I need to adjust the spark plug gap?
No. The NGK ILZKAR8H8S comes pre-gapped at 0.8 mm and is ready to install right out of the box.

Is it compatible with the Civic Type-R (FK8)?
Yes. The ILZKAR8H8S is the correct NGK spark plug for the Honda Civic Type-R (2015–2021) with engine code K20C1.

What are the signs of worn spark plugs?
Hard starting, poor acceleration, increased fuel consumption, or rough idling. Replacing old plugs with NGK ILZKAR8H8S can restore smooth performance and optimal combustion.