What Size Is A NGK Spark Plug?
What Size Is A NGK Spark Plug? NGK Spark Plug BP6ES 7811 (Pack of 6) Wrench size 20.8 mm Thread diameter 14.0 mm Thread Length 19.0 mm Spark gap 0.9 mm. What size socket do I need for NGK spark plugs? Most spark plugs require a 5/8′′ (16mm) size spark plug socket. How do I