Thread Size . M14*1.25
Reach . 19 mm
Hex Size . 16 mm
Resistor . Yes
Center Electrode Material . Iridium
Ground Electrode Material . Platinum
VK20 5604 41-602 CFR2CLS FR1LS 3923 5224 9062 602 907 9921 AP64
What causes bad spark plugs?
Carbon Buildup: Just like oil can cause a spark plug to go bad, so can carbon buildup. ... A cracked distributor case, dirty fuel injectors, improper fuel/air mixture, clogged air filter element, to name a few can cause carbon to build up on spark plugs and quickly cause problems.