Identification and Construction
D | First letter of the spark plug part number identifies the spark plug dimensions. Shell dimensions A B D F G H J K L N P U |
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Metal shell projected into combustion chamber | |||||||||
Complies with relevant ISO standard | |||||||||
O | Does not comply with relevant ISO standard | ||||||||
R | Interference suppression | ||||||||
No interference suppression | |||||||||
R | Interference suppression | ||||||||
X | Resistor reducing electrode burn-off | ||||||||
15 | Heat range | ||||||||
Hot | Cold | ||||||||
19 | 18 | 17 | 16 | 15 | 14 | 12 | 10 | 08 | |
L | Spark gap design | ||||||||
Not projected insulator tip | |||||||||
Y | Projected insulator tip | ||||||||
L | Extremely projected insulator tip | ||||||||
T | Projected insulator tip and three ground electrodes EXTRA | ||||||||
LG | Extremely projected insulator tip and ring-shaped spark gap PREMIUM | ||||||||
Z | Two auxiliary electrodes on the insulator tip and ring-shaped electrode gap PREMIUM | ||||||||
TX | One auxiliary electrode on the insulator tip and three ground electrodes PREMIUM | ||||||||
LT | Extremely projected insulator tip and three ground electrodes EXTRA | ||||||||
C | Elektrode material | ||||||||
Nickel-alloy centre electrode | |||||||||
C | Copper cored centre electrode SUPER | ||||||||
S | Silver centre electrode SILVER | ||||||||
P | Centre electrode with platinum contact PLATIN | ||||||||
PP | Centre and ground electrode with platinum contact PLATIN | ||||||||
-1 | Spark gap | ||||||||
0,4 - 0,9 mm | |||||||||
-05 | 0,5 mm | ||||||||
-1 | 1,0 - 1,1 mm | ||||||||
-3 | 1,3 mm | ||||||||
-X | Special |