NGK CR9EKequivalent & cross reference
The NGK CR9EK spark plug is directly equivalent to DENSO U27ETR and DENSO IU27A, confirmed by shared applications in both manufacturers' official catalogues.
Equivalents
| Part | Shared applications | Agreement |
|---|---|---|
| DENSO U27ETR | 24 | 100% |
| DENSO IU27A | 24 | 100% |
Verified fitments for the NGK CR9EK
Equivalence confirmed by 3 independent sources, last verified 22 July 2026. Always confirm fitment against your owner's manual.