V-FACTOR Sparkies Spark Plug Cover Pair with RED Lens
Fits all Harley-Davidson spark plugs with 90° boots
Designed to show your engine's spark through colored lenses
at the base of the wire
Sold as a set of 2
Also available in BLUE
Easy to install. Just remove the rubber boot that goes over the wire. Slide the rubber boot over the spark plug wire. Then the Sparkie has a threaded stud if you look down into it. Just thread this into yor spark plug Wire.
For these Sparkies to snap onto your spark plug, your spark plug will need a terminal nut. If you look at the end of your spark plug and you see threads, you need the terminal nut. Most spark plugs come with a terminal nut.