Indmar
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Champion Spark Plugs for Indmar Inboard MotorsChampion spark plugs are original equipment on many inboard and outboard 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 |
|---|---|---|---|---|
| Cadillac 4.6L V8 MPI Northstar | — | RS14PYP6 | 0.05 | |
| Cadillac 6.0L V8 HO Vortec | — | RS14PMPB5 | 0.06 | |
| Chevrolet 4.3L V6 EFI | RV12YC | — | 0.035 | |
| Chevrolet 400 CID V8 | RV12YC | — | 0.045 | |
| Chevrolet 5.0L V8 Carb. | RV12YC | — | 0.045 | |
| Chevrolet 5.7L V8 Carb. | RV12YC | — | 0.045 | |
| Chevrolet 5.7L V8 EFI | RV12YC | — | 0.045 | |
| Chevrolet 5.7L V8 EFI HO | RS9YC | — | 0.045 | |
| Chevrolet 5.7L V8 Gen1 Carb. | RS9YC | — | 0.03 | |
| Chevrolet 5.7L V8 Gen1 EFI | RS9YC | — | 0.045 | |
| Chevrolet 5.7L V8 Gen1 HO EFI | RS9YC | — | 0.03 | |
| Chevrolet 5.7L V8 HO Carb. | RS9YC | — | 0.045 | |
| Chevrolet 5.7L V8 LT-1 EFI | RS9YC | — | 0.045 | |
| 2002-1998 | Chevrolet 7.4L V8 | RS9YC | — | 0.045 |
| Chevrolet 7.4L V8 Prior to 1998 | RV12YC | — | 0.045 | |
| 2002-1998 | Chevrolet 8.2L V8 | RS9YC | — | 0.045 |
| Chevrolet 8.2L V8 Prior to 1998 | RV12YC | — | 0.045 | |
| Ford 5.0L V8 | RV12YC | — | 0.044 | |
| Ford 5.8L V8 | RV12YC | — | 0.044 | |
| Ford 5.8L V8 HO | RS9YC | — | 0.044 | |
| Ford 7.5L V8 | RV12YC | — | 0.044 | |
| 1982-1976 | Oldsmobile 350 CID V8 | RJ18YC | — | 0.04 |
| 1982-1976 | Oldsmobile 403 CID V8 | RJ18YC | — | 0.04 |
| 1976-1975 | Oldsmobile 455 CID V8 | RJ18YC | — | 0.04 |