Champion N21 Cross Reference: NGK B4ES, Denso W14E
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Champion N21 spark plug cross reference

According to our cross reference data, the Champion N21 spark plug is equivalent to: NGK B4ES, Denso W14E.

Spark plug interchange table

BrandPart number
ChampionN21 (your part)
NGKB4ES
DensoW14E

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Frequently asked questions

What is the equivalent of the Champion N21 spark plug?

According to our cross reference data, the Champion N21 spark plug is equivalent to: NGK B4ES, Denso W14E. Always confirm heat range, thread size and reach in the manufacturer catalog for your engine.

Cross reference tables by brand

Denso cross referenceChampion cross referenceBrisk cross referenceBosch cross referenceBeru cross referenceNGK cross reference

Cross references are for guidance only. Confirm heat range, thread size, reach and gap for your engine in the manufacturer catalog before buying.