Does the NGK MAR9A-J fit the Ducati Diavel (2011–2019)?
Yes — the NGK MAR9A-J is a correct fitment for the Ducati Diavel (2011–2019).
Last verified: 22 July 2026 against 2 independent sources (NGK UK Motorcycle Catalogue 2022 (official PDF), Sportsbikeshop fitment catalogue).
Brakes are safety-critical. Always confirm fitment against your owner's manual before purchase and installation.