DENSO X27ESR-Uequivalent & cross reference
The DENSO X27ESR-U spark plug is directly equivalent to NGK DR8ES and NGK DR9EIX and NGK DR9EA, confirmed by shared applications in both manufacturers' official catalogues.
Equivalents
| Part | Shared applications | Agreement |
|---|---|---|
| NGK DR8ES | 7 | 78% |
| NGK DR9EIX | 17 | 71% |
| NGK DR9EA | 10 | 91% |
Verified fitments for the DENSO X27ESR-U
Equivalence confirmed by 3 independent sources, last verified 22 July 2026. Always confirm fitment against your owner's manual.