DILZKAR6A11 NGK Spark Plug IRIDIUM 91691

Use in most of Nissan car, OE number 

22401ED715 = DENSO FXE20HE11

22401ED71B

NGK - Laser Iridium 1-Ground Electrode Spark Plug 

Single long lasting Laser Iridium premium spark plug from NGK. 
Centre Electrode - Iridium tip 
Ground Electrode - Platinum pad/chip 
Service Life - 100,000km