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Champion Spark Plug D14 For Harley-Davidson
49.13 €
HD #4, a cooler range.
M18X1.5 thread.
1/2" (12.7 mm) short reach.
Used with 24mm spark plug socket.
This D14 (HD #4) spark plug is one range cooler (runs cooler and removes heat faster) than the standard D16 (HD #3) spark plug.
This D16 is available as MCS 931600.
The cooler running properties make this D14 more suitable for high speed driving, as found in extended highway use.
The spark plug is a copper-cored center electrode and comes with the patented Ultraseal™ coated housing to help.
Keep the spark plug free of corrosion for a longer period of time.
6 units
Fits: > 750(45")/1200(74")/1340(80") Side Valve (Flatheads); 36-47 Knucklehead (61/74") (OHV) models