Description 297656 Spark Plug – 12 mm Thread Description A genuine 12 mm spark plug approved for use in Rotax 912, 912ULS, 912iS, 914, and compatible 582 engines. This plug is pre-gapped for aviation use and ensures smooth combustion, reliable starts, and consistent ignition performance in dual-spark systems. Key Features OEM-approved part (Rotax Part No. 297656) Designed for Rotax 4‑stroke and select 2‑stroke engines with 12 mm plug threads Supplied pre-gapped and ready to install Fully compatible with dual-ignition systems Benefits Promotes clean, efficient combustion with stable spark under all operating conditions Prevents misfire and plug mismatch issues in dual-spark systems Replaces earlier plug variants with a single, standardized part Designed to meet Rotax’s strict ignition system performance requirements Application Notes Use only matching spark plugs across all cylinders to maintain ignition timing balance Suitable for 912UL, ULS, iS, 914, and 582 engines using 12 mm plug ports Install using the correct torque setting: 16 Nm on a cold engine Replace at service intervals or if fouling, cracking, or electrode wear is observed
