2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 445Get this manual

Section 08 ELECTRICAL Subsection 02 (SPARK PLUGS)
DESIGN SYMBOLS USED IN NGK SPARK PLUGS

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives