Passenger Cars and Commercial Vehicles
CHEVROLET
| Model |
Engine |
Year |
Standard Plug |
Gap (mm) |
Iridium Power |
Iridium Tough |
| 110 cu.in (LUV), K820 |
 LUV 4 Cyl. |
1970 to 1975 |
W20EPU |
0.8 |
IW20 |
VW20 |
| 110 cu.in (LUV), K820 |
 LUV 4 Cyl. |
1976 to 1978 |
W20EPRU |
0.8 |
IW20 |
VW20 |
| Except “W†Series |
 6 Cyl. |
1954 to 1962 |
W20SU |
0.9 |
|
|
| “W†Series |
 6 Cyl. |
1958 to 1962 |
W20ESU |
0.8 |
|
|
| 2.0, 2.5 Ton HD |
2.0L, 2.5LÂ 6 Cyl. |
|
W20SU |
0.9 |
|
|
| C20, C30, C50, C60 |
 8 Cyl. |
to 1975 |
T16RU |
0.9 |
ITF16 |
|
| V8 Except “W†Series |
 8 Cyl. |
1954 to 1962 |
W20SU |
0.9 |
|
|
| V8 “W†Series |
 8 Cyl. |
1954 to 1962 |
W20ESU |
0.8 |
|
|
| V8 |
 8 Cyl. |
1970 on |
W20ESU |
0.8 |
|
|
| 2.0, 2.5 Ton HD |
2.5L, 2.0LÂ 8 Cyl. |
|
W20SU |
0.9 |
|
|
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