The engine changes the reference
Toyota’s 2020 Corolla specification identifies DENSO FC20HR-Q8 for the 2.0-liter M20A-FKS and FC16HR-Q8 for the 1.8-liter 2ZR-FAE. A listing that says only “2020 Corolla” leaves an important distinction unresolved.
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Confirm current replacement information
Treat these as the manual’s original references. Check the current Toyota or DENSO catalog for your VIN and any supersession before purchasing. Similar names or physical appearance do not establish interchangeable heat range or application.
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Do not guess the installation values
This reference identifies the plug; it does not provide a verified torque or tuned-engine gap. Use the correct service procedure and plug instructions for installation. If the engine is modified, discuss any departure from the original specification with the tuner rather than choosing a colder plug solely because it is marketed for performance.
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Sources / references 1
- Manufacturer technical reference ↗Reviewed Oct 6, 2026
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