The part numberBKR-6ES11-00-00 refers to a genuine Yamaha OEM NGK Spark Plug BKR6ES-11 primarily used in Yamaha 2-stroke outboard motors. It is a factory-original maintenance part designed for specific engine performance and reliability.Â
 This nickel-alloy spark plug features the following specifications
Thread Diameter: 14.0 mm.
Thread Reach: 19.0 mm (3/4 inch).
Hex Size: 16.0 mm (5/8 inch).
Gap Setting: 0.9 mm (0.035 inches).
Heat Range: 6 (NGK scale where lower numbers are "hotter").
Core Material: Copper for improved heat dissipation.Â
Compatible Application
This spark plug is widely used in Yamaha marine engines, particularly 2-stroke models from approximately 2001 and earlier.