Harley-Davidson Softail 1984-1999 Performance Spark Plugs Pair repl. OEM# 5R6A Conventional style spark plugs, available in OEM heat ranges Plugs have a unique look with a black ceramic body Insulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulation Sold in Pairs Harley-Davidson Softail 1984-1999