Photo 1 of NGK Spark Plug BP6ES 7811 Wrench size 20.8 mm Thread diameter 14.0 mm Thread Length 19.0 mm Spark gap 0.9 mm

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Photo 1 of NGK Spark Plug BP6ES 7811 Wrench size 20.8 mm Thread diameter 14.0 mm Thread Length 19.0 mm Spark gap 0.9 mmPhoto 2 of NGK Spark Plug BP6ES 7811 Wrench size 20.8 mm Thread diameter 14.0 mm Thread Length 19.0 mm Spark gap 0.9 mm