Does the DENSO X27ESR-U fit the Kawasaki GPZ 600 R (1985–1989)?
Yes — the DENSO X27ESR-U is a correct fitment for the Kawasaki GPZ 600 R (1985–1989).
Last verified: 22 July 2026 against 2 independent sources (Cross-brand plug correspondence (NGK + Denso catalogues), Denso Motorcycle Spark Plug Catalogue (official PDF)).
Brakes are safety-critical. Always confirm fitment against your owner's manual before purchase and installation.
Where to buy the DENSO X27ESR-U (price comparison)
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