Does the DENSO IW27 fit the Yamaha TDR 250 (1988–1992)?
Yes — the DENSO IW27 is a correct fitment for the Yamaha TDR 250 (1988–1992).
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 IW27 (price comparison)
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