How do I know what heat range my spark plugs are?
The heat range is determined by the insulator nose length and its ability to absorb and transfer combustion heat, the gas volume around the insulator nose, and the materials/construction of the center electrode and porcelain insulator.In identical spark plug types, the difference from one heat range to the next is the …
What do the numbers on spark plugs mean?
Different manufacturers use similar coding, which makes it easier to interchange brands if need be. Measurements are usually metric. Using NGK spark plug codes as an example, the code numbers may be BCPR6ES-11 or PFR6A-11A.
How does the NGK spark plug numbering system work?
These NGK spark plug charts explain how NGK’s numbering system works. View full size version of NGK spark plug numbering chart. View full size version of NGK performance plug numbering chart. View full size version of NGK premium plug numbering chart.
What are the numbers on a Champion Spark Plug?
Champion Spark Plug Numbering System Wondering what the numbers and letters on a Champion spark plug mean? This Champion spark plug chart explains how Champion’s numbering system works. Viewfull size version of Champion spark plug numbering chart.
What does the letter E mean on a spark plug?
The letter “E” indicates the reach of the spark plug, that is, the length of the threads. There are two size reaches currently being used in motorcycles and ATVs. “H” indicates a 1/2″ reach, while “E” indicates a 3/4″ reach. The letter “A” indicates some type of special feature.
What do the numbers mean on a spark plug?
[15] Heat Range – The middle number indicates the heat range of the spark plug, the higher the number the hotter the heat range. [YC] Firing End Design – The letters after the heat rating indicates a special spark plug construction feature called the firing end design.
These NGK spark plug charts explain how NGK’s numbering system works. View full size version of NGK spark plug numbering chart. View full size version of NGK performance plug numbering chart. View full size version of NGK premium plug numbering chart.
Champion Spark Plug Numbering System Wondering what the numbers and letters on a Champion spark plug mean? This Champion spark plug chart explains how Champion’s numbering system works. Viewfull size version of Champion spark plug numbering chart.
What are the parts of a spark plug called?
[V] Shell Design – This refers to the thread size and reach of the spark plug. Heat Range – The middle number indicates the heat range of the spark plug, the higher the number the hotter the heat range. [YC] Firing End Design – The letters after the heat rating indicates a special spark plug construction feature called the firing end design.