Firestone
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Champion Spark Plugs for Firestone Outboard MotorsChampion spark plugs are original equipment on many outboard and inboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may also find the Champion spark plug code helpful. |
| Year | Model / Engine | Copper Plus Plug | Alternate Plug | Gap |
|---|---|---|---|---|
| 30 HP | ||||
| 1962-1960 | RH12 | H12 | 0.03 | |
| 25 HP | ||||
| 1962-1960 | RH12 | H12 | 0.03 | |
| 12 HP | ||||
| 1962-1960 | RH12 | H12 | 0.03 | |
| 8 HP | ||||
| 1962-1960 | RH12 | H12 | 0.03 | |
| 7.5 HP | ||||
| 1962-1960 | RH12 | H12 | 0.03 | |
| 2 HP | ||||
| 1962-1960 | RH12 | H12 | 0.03 | |
| 1966 | Featherweight 5 | RJ12C | J11C | 0.03 |