available for a wide variety of harley-davidson® engines ceramic insulator is identified ... and h-d code each plug is pre-gapped to harleydavidson specifications patented sold in pairs ... -equipped models evolution® shovelhead panhead 84 99 evolution® 1340-equipped models ... 1340 engines 48 74 shovelhead/panhead 1200 engines sportster 86-later ... modifications such as performance carburetors air cleaners cam-shafts exhaust systems ...
available for a wide variety of harley-davidson® engines ceramic insulator is identified ... h-d ® code each plug is pre-gapped to harley-davidson specifications patented sold in pairs ... -equipped models evolution® shovelhead panhead 84 99 evolution® 1340-equipped models ... 1340 engines 48 74 shovelhead/panhead 1200 engines sportster® 86-later ... modifications such as performance carburetors air cleaners cam-shafts exhaust systems ...