Ngk Spark Plugs Iridium IX Spark Plug Yamaha 1986-...

The ultimate in the evolution of spark plug technology and performance from the industry leader The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life New metal shell plating has enhanced anti-corrosion qualities

• Brand: NGK SPARK PLUGS
• Vendor Part Number: 4218
• Center Electrode Projection: Non-Projected
• Center Electrode Type: Necked Down
• Electrical Resistance: 5k Ohms
• Electrode Tip Material: Iridium
• Ground Electrode Configuration: Single
• Ground Electrode Shape: Grooved
• Heat Range: 8
• Hex Size: 16 mm (5/8")
• Model: CR8EIX
• Product Name: Spark Plug
• Spark Gap: 0,8 mm (0,031")
• Spark Gap Imperial: 0.031"
• Spark Gap Metric: 0.8 mm
• Style: Iridium IX
• Terminal Configuration: Threaded Stud
• Thread Reach: 19,1 mm (3/4")
• Thread Size: 10 mm
• Type: Resistor
• Units: Each