S&S® now offers the same high quality Autolite® spark plugs that we include with our engines for replacement in S&S and stock engines alike. These long reach resistor spark plugs are a replacement 14mm spark plug. They are the correct heat range for all S&S engines and also fit 1977 and later Harley-Davidson® engines. Compatible with any ignition system.
Harley-Davidson® part number 32311-83.
Note: All reference to H-D® part numbers is for identification purposes only. We in no way are implying that any of S&S Cycle's products are original equipment parts or that they are equivalent to the corresponding H-D® part number shown.