specializes in hard to find NGK products. We are not NGK Spark Plugs USA. To contact them, click here.

NGK Glow Plug Numbering System

Wondering what the numbers and letters on an NGK glow plug mean? These NGK glow plug charts explain how NGK's numbering system works.

NGK Glow Plug Numbering Chart

View full size version of NGK glow plug numbering chart.