Standard replacement spark plug for Zeda Firestorm 80cc and 100cc kits as well as the ZTMoto Phantom 85cc engine kit. Marked Z8C: Z - 14mm x 1.25 (diameter x threads) X 11mm or 7/16" (reach), 8 - colder (heat rating), C - copper core (type of electrode).
NGK equivalent - B6HS, B7HS, BP6HS, BP7HS, BPR6HS, BPR7HS, BPR6HIX, BPR7HIX, Champion equivalent - L82YC, RL82YC, L86C
Aftermarket spark plugs may need additional tuning or gap adjustment for the engine to run safely and properly, and is the responsibility of the owner.