Maintenance / 2021 Civic 5Dr · Automatic (AV-S7) · 4 cyl · 1.5 L · Turbo
Spark plugs
Use the engine-specific plug type. Check the service schedule and inspect ignition faults before replacing parts.
IntervalReplace plugs and inspect valve clearance at Maintenance Minder item 4.Verified
01 / Requirements
Configuration-specific service and fitment facts
These sourced values are shared by the specification sheet and the maintenance guides for this exact configuration.
- Cylinders
- 4 Verified
- Spark plug specification
- NGK ILZKAR8H8S Verified
- Installation
- Work on a cooled engine using the specified tightening procedure. Do not adjust a fine-wire plug gap unless its manufacturer explicitly permits it.
- Service requirements
- The owner manual lists NGK ILZKAR 8 H 8 S. Confirm the current exact service part, required count and installation procedure separately; no gap or tightening torque is inferred.