DENSO U27ESR-Nequivalent & cross reference

The DENSO U27ESR-N spark plug is directly equivalent to NGK CR9E, confirmed by shared applications in both manufacturers' official catalogues.

Equivalents

Part	Shared applications	Agreement
NGK CR9E	27	87%

Kawasaki ZX-6R (2013 on)
Kawasaki ZXR 750 (1991–1995)
Suzuki RF 900 R (1994–1995)
Yamaha FZR 600 (1989–1989)
Yamaha FZR 600 R (1994–1995)
Yamaha FZS 1000 Fazer (2001–2005)

Equivalence confirmed by 3 independent sources, last verified 22 July 2026. Always confirm fitment against your owner's manual.