| Model | Engine | Year | Standard Plug | Gap (mm) | Iridium Power | Iridium Tough |
|---|---|---|---|---|---|---|
| CA | Â | W22SU | 0.8 | |||
| CF | Â Bedford Engine | T20PU | 0.9 | ITF20 | ||
| CF | Â Holden Engine | T16PU | 0.9 | ITF16 | ||
| HA | Â | W20ESU | 0.8 | |||
| J1, J2, J3, J5, K2 | Â | W20SU | 0.7 | |||
| KA40, KA41 | Â | 1972 to 1977 | W16EXU/EPU | 0.8 | IW16 | VW16 |
| 250, 292 | Â Chev. Engine, Gasket seat | W20ESU | 0.8 | |||
| 250, 292 | Â Chev. Engine | T16PU | 0.9 | ITF16 | ||
| 308 | Â Holden V8 Engine | T16PU | 0.9 | ITF16 |