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• The tool is double-ended to offer a straight boot and a 90 boot on one tool
• Connect the tool between the spark plug and the plug wire
• Quickly diagnose problems with all ignition systems

• Four yttrium enhanced ground electrodes resist spark plug wear and oxidation for exceptional performance life
• Fused iridium and platinum center electrode, sintered into an extended insulator nose results in reaching self-cleaning temperature only seconds after starting and provides exceptional wear resistance
• Factory pre-set gap allows for easy installation that never requires adjustment

• Near elimination of performance inhibiting carbon deposits, dramatically longer plug life and a 5-year/100,000 mile limited warranty
• Significant potential fuel efficiency improvement: > 4% to 13% (depending on engine class)
• Drastic potential emissions reduction when used in 2 and 4-stroke engines (after 50 hours): 58% CO emissions reduction, 42% hydrocarbon reduction

• Fine Iridium tip ensures high durability
• You can depend on NGK for quality and reliability
• Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines

• Pocket clip
• Flashing bulb indicates spark
• Test without puncturing the wire