Harley Knuckle,Flathead 18mm Spark Plug Body Set.
Fits models from 1929-52..This unique two piece zinc plated cover set converts the D-16 Champion 18mm spark plugs to the early air cooled original Harley look! They are easy to install and re-useable..Spark Plugs not included..
Order Spark Plugs separately= SKU;716
Box # 1467
