4X Engine Spark Plug Nut Cap Parts For Harley Davidson Twin Cam 1999-20 Aluminum
For Harley-Davidson Most Twin Cam models 1999-2020. For Big Twin 1340 Evo Models 1985-1999. For Harley XL 883 1200 Softail Dyna Sportster. For Harley Sportster models 1986-2020. - They are for the head bolts on either side of the spark plugs.