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2016-2021 Honda Civic spark plug & gap

The Civic came with more than one engine, and they don't all take the same plug. Find your engine below for the exact part number, gap, and where to buy it.

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1.5L I4 · 2016-20211.5L-I4

Spark plug part number

  • NGKILZKAR8H8S(heat range 8 NGK scale)

Confirmed from NGK + retailer catalog · verified Jul 2026.

Gap

0.032 in (0.81 mm)

We don't stock a reviewed plug for this engine yet. Search the confirmed part number on Amazon — it's the safest way to land on the right plug.

Find NGK ILZKAR8H8S on Amazon
Where this came from
  • HondaPartsNow genuine OEM catalog — Honda part 12290-59B-003 = NGK ILZKAR8H8S (1.5T Civic application list)source
  • RockAuto catalog navtree — 2018 HONDA CIVIC 1.5L L4 Turbocharged > Ignition > Spark Plug (NGK 95112 row); no Denso row present in this listingsource

2L I4 · 2016-20212.0L-I4

Spark plug part number

  • NGKDILKAR7G11GS
  • DensoDXE22HQR-D11S

Confirmed from NGK + Denso · verified Jul 2026.

We don't stock a reviewed plug for this engine yet. Search the confirmed part number on Amazon — it's the safest way to land on the right plug.

Find NGK DILKAR7G11GS on Amazon
Where this came from
  • sparkplug-crossreference.com — Honda 12290-5A2-A01/A02 cross-ref table (NGK DILKAR7G11GS entry)source
  • HondaPartsNow genuine OEM catalog — Honda part 12290-5A2-A02 = Denso DXE22HQR-D11S (2.0L Civic LX/Sport application list, 2016-2024)source

Part number and gap confirmed against two independent maker sources — never changed by what an affiliate link pays us. Heat range is shown per brand on purpose: a Denso number and an NGK number don't mean the same thing, so never compare them directly. Your owner's manual is always the final word.