D |
Shell dimensions |
O |
Metal shell projected into combustion chamber |
|
|
Complies with relevant ISO standard |
|
O |
Does not comply with relevant ISO standard |
R |
Interference suppres |
|
|
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 |
