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In-depth guide
2021 Honda Civic
2021 Honda Civic sedan spark plug numbers for the 1.5 L and 2.0 L engines. No gap and no firing order are printed.
Difficulty, time, and cost are estimates when this guide gives them. Torque is a cited figure, or it is left off.
Main source: 2021 Civic Sedan Owner's Manual, specifications, spark plugs (opens in a new tab), American Honda Motor Co., Inc., published 2020-08-25, read 2026-10-15.
Numbers on this page come from the cited source. Match the engine before you use a capacity or a torque. Do not work under a vehicle held only by a jack.
None listed
The specifications table names the plugs and does not print a socket, a gap, or a torque.
| Item | Figure | Where it comes from |
|---|---|---|
| 1.5 L | NGK ILZKAR8H8S. Displacement 91.38 cu-in (1,498 cm3). | 1.5 L engine specifications |
| 2.0 L | The cell lists NGK DILKAR7H11GS, NGK DILKAR7G11GS, and DENSO DXE22HQR-D11S. Displacement 121.76 cu-in (1,996 cm3). | 2.0 L engine specifications |
The 1.5 L engine specifications list NGK ILZKAR8H8S only.
The 2.0 L spark plug cell lists NGK DILKAR7H11GS, NGK DILKAR7G11GS, and DENSO DXE22HQR-D11S. The table does not rank them, so none is dropped.
Neither engine page prints a gap or a firing order.
The 2.0 L list is one cell, not three different engines. Until the manual assigns a number to a trim, all three stay on the page.
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Part
Spark plug listed for that engine
ILZKAR8H8S on the 1.5 L. DILKAR7H11GS, DILKAR7G11GS, or DXE22HQR-D11S as listed together on the 2.0 L.
Civic sedan spark plug specifications (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)
Tool
None listed
The specifications table names the plugs and does not print a socket, a gap, or a torque.
2021 Civic sedan specifications (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)
The sedan specifications list NGK DILKAR7H11GS, NGK DILKAR7G11GS, and DENSO DXE22HQR-D11S in one cell and do not assign them to a trim. This page does not pick one. Confirm the car against the sedan book or a dealer before you leave two of them off the order.
No gap is printed for either engine in the pages that were read.
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These guides cover the same kind of work. Their numbers belong to those vehicles, not to this one.