Overview Manufacturer: NGK Spark Plug Co., Ltd. (NGK) — a globally recognized leader in ignition technology. Product: NGK AB6 spark plug (also listed as AB-6; cross reference NGK 2910). Versatile ignition plug designed for both 2-stroke and 4-stroke engines across motorcycles, marine applications, and select industrial/work machines. Triple-seal gasket for leak prevention, SAE terminal connector, single ground electrode, and a solid copper core for durable performance. Key Features Part Number: AB6 (AB-6); cross reference NGK 2910. Type of machine suitable for: broad compatibility with motorcycles, small boats/marine engines, and certain Briggs & Stratton, Wisconsin industrial engines. Installation tips: SAE connector for quick connection; triple-seal design to prevent leaks; standard ground electrode configuration; heat range 6; electrode gap 0.7 mm; thread size M18 x 1.5; reach 11.0 mm; non-resistor construction. Compatibility compatible with a wide range of 2-stroke and 4-stroke engines in motorcycles, marine engines (examples include certain vintage and modern outboards), and select industrial/work machines. Alternative part numbers: AB-6, AB6, 2910 (NGK cross references). Notes: Historically used in various applications such as vintage Puch motorcycles (e.g., Puch 250E 1934–1937) in niche markets; verify fit with engine specifications when pairing with specialty equipment.
