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Decent.
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Prices may varyThis product ranks #22 of 31 in Spark Plug.Three above it ↓
Last reviewed July 13, 2026
TL;DR NGK is the genuine OE supplier for the 2016-2021 Civic 1.5L turbo; the ILZKAR8H8S cross-references to Honda 12290-59B-003. Iridium electrode, platinum ground, heat range 8, gap 0.031in, rated 100,000 miles.
Iridium fine-wire center electrode with a laser-welded platinum ground disc, NGK heat range 8, 12mm thread, 26.5mm reach, gasket seat. NGK is the genuine OE factory supplier here: cross-references to Honda part 12290-59B-003, confirmed via Honda's genuine-parts catalog and independently via RockAuto's catalog for the 1.5L turbo Civic application. Ships pre-gapped to 0.031in/0.8mm. Rated 100,000 miles under NGK's Laser Iridium line; no removal-photo evidence at that interval was found yet. Covers the 1.5L and 2.0L turbo Civic engines; excludes the Si.
Right pick for a 2016-2021 Civic 1.5L turbo (non-Si) at the factory interval. Skip for a Civic Si, which uses a different plug.
No chemical exposure pathway: passive ignition part, no SDS. The 100,000-mile interval cuts consumption to roughly a third of copper, offsetting the iridium and platinum content. Steel shell recycles as ferrous scrap; ceramic insulator goes to landfill, no take-back program exists.
The ILZKAR8H8S (NGK stock number 95112) is the genuine factory-spec plug for the 2016-2021 Honda Civic 1.5L turbo (non-Si), cross-referencing to Honda dealer part 12290-59B-003. It also covers the Civic's 2.0L Turbocharged applications. The manufacturer listing explicitly states it is not recommended for the Civic Si, which uses a different engine and its own OEM plug. Always confirm against the NGK application guide for your specific year, trim, and engine before purchasing.
NGK specifies a factory gap of 0.031 inches (0.8mm) for the ILZKAR8H8S, consistent with community reports for the 1.5T Civic application. The plug ships pre-gapped, though checking the gap on receipt before installation is standard practice for any spark plug.
Yes. NGK is the genuine OE supplier for this application, and the ILZKAR8H8S cross-references directly to Honda dealer part 12290-59B-003 for the 2016-2021 Civic 1.5L turbo. This cross-reference is confirmed independently through Honda's genuine-parts catalog and through RockAuto's parts catalog for the same application.
NGK rates the ILZKAR8H8S at 100,000 miles as part of the Laser Iridium line. This is the manufacturer's stated rating; community removal-photo evidence confirming the full interval for this specific part number was not located in our research.
NGK heat range 8, encoded in the part number itself (ILZKAR8H8S). This matches the Honda factory specification for the 1.5L turbocharged Civic engine; using a different heat range than the OEM-specified value risks pre-ignition or fouling.
Marketing copy from NGK, via Amazon. Not editorial.
Per manufacturer cross-reference. Verify on Amazon before purchase.
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