Spark plugs: 2012–2015 Civic Si (2.4L)
The 2012–2015 Civic Si moved to a 2.4L and takes 4 Denso SXU22HCR11S plugs (Honda 12290-R40-A02).
Part numbers
Spark plugs
4
Denso SXU22HCR11S
Honda part 12290-R40-A02.
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How the job goes
- Work on a cold engine. Remove the engine cover if fitted.
- Unplug and remove each ignition coil. On V6 engines the rear bank is under the intake area; take your time and label connectors.
- Blow debris out of each plug well before removing the plug.
- Remove the old plugs; start each new plug by hand, then tighten to the service-manual spec.
- Reinstall the coils and connectors.
Before you order
- These are pre-gapped iridium plugs. Don't re-gap them.
- Don't mix brands in one engine.
- Confirm the tightening torque in a service manual; over-tightening can damage the aluminum head.