NGK Laser Iridium Spark Plugs for Honda Civic 2016–2021 (4-Pack) — OE-equivalent, Improved Ignition & Long Life

NGK Laser Iridium spark plugs (4-pack) are high-durability ignition plugs engineered to improve ignitability, extend service life, and match OE performance for select 2016–2021 Honda Civic models.

These NGK Laser Iridium plugs combine a fine iridium center tip and a platinum-backed ground electrode to resist wear while delivering a strong, consistent spark. Built with a longer insulator nose, corrugated ribs to prevent flashover, and a triple-gasket seal to stop combustion leaks, they’re designed as an OE-equivalent replacement for L4 2.0L Turbocharged and L4 1.5L Civic engines (not recommended for Civic Si). The smaller electrode diameter and laser-welded construction aim to preserve idle stability, reduce fouling, and help maintain fuel efficiency over many miles.

How will these spark plugs affect starting and throttle response?

NGK Laser Iridium plugs produce a focused, consistent spark that helps ignition under a range of engine loads, which can contribute to faster starts and crisper throttle response. They’re engineered to maintain spark quality as the electrodes wear very slowly.

• Laser-welded iridium tip for stronger, longer-lasting spark
• Smaller tip diameter for improved ignitability
• Triple gasket seal to prevent combustion leakage that can hurt starts
• Designed to match OE heat range for reliable operation

Will these plugs last longer than my stock plugs?

Yes — the iridium center tip and platinum disc on the ground electrode slow wear compared with conventional copper plugs, extending useful service life. The robust materials and welding method are chosen to retain electrode geometry and spark characteristics over many miles.

• Iridium center electrode resists erosion for long service intervals
• Platinum-backed ground electrode extends durability
• Corrugated insulator ribs reduce flashover risk that can shorten service life

Do these spark plugs help with fuel economy and emissions?

By preserving a consistent, efficient spark and reducing misfires and fouling risk, NGK Laser Iridium plugs can help an engine run more cleanly and efficiently. Any gains depend on overall vehicle condition and correct installation, but consistent ignition generally supports better fuel burn and lower emissions compared to worn plugs.

• Improved ignitability helps reduce incomplete combustion
• Longer insulator nose reduces fouling that can cause poor combustion
• Stable spark reduces transient misfires that increase emissions

How do I know these are compatible with my Civic?

This specific NGK set (ILZKAR8H8S, Mfr. P/N 95112) is intended as an OE-equivalent replacement for Honda Civic L4 2.0L Turbocharged and L4 1.5L engines from model years 2016–2021. It is not recommended for Civic Si models. Always cross-check part numbers with your owner’s manual or VIN-specific fitment tools before purchase.

• Manufacturer Part Number: 95112 / NGK ILZKAR8H8S
• Fits select 2016–2021 Honda Civic 1.5L and 2.0L turbo engines
• Not recommended for Civic Si; verify with vehicle documentation

Who is this for? These NGK Laser Iridium spark plugs are aimed at Honda Civic owners and mechanics seeking an OE-equivalent, long-life replacement that prioritizes consistent ignitability and reduced electrode wear. They suit drivers who want durable plugs for everyday commuting, highway driving, or anyone maintaining a 2016–2021 Civic with the specified 1.5L or 2.0L engines and who prefers proven OEM-quality ignition components.