Ngk Iridium IX Spark Plug - 6637 For BMW Motorcycles 1969-1995 | Moto Guzzi Motorcycles 2006-2010 Brand_Cobra Note: Standard bolt pattern

Note: Standard bolt pattern

Helps ensure engine properly regulates the amount of oil flow to oil cooler and heads

FP4 hardware is smaller and thinner than the previous generation

Vented screw in cap

Ngk Iridium IX Spark Plug - 6637 For BMW Motorcycles 1969-1995 | Moto Guzzi Motorcycles 2006-2010 Brand_Cobra Note: Standard bolt patternFeatures 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 Specs Electrode Tip Material Iridium Terminal Configuration