- Grasp the spark plug boot and gently rotate it 90 degrees counterclockwise. Pull the spark plug boot and cable away from the spark plug. If necessary, use a spark plug boot removing tool. DO NOT grab or violently pull spark plug cables.
- Apply dielectric grease into the boot area to reduce the chance of exterior tracking on the buttress tower of the spark plug. This grease also promotes a good heat transfer between the spark terminal screw and boot terminal.
- Put ACDelco quality into non-automotive engines with our Specialty series of high-quality spark plugs. ACDelco Specialty spark plugs are designed to efficiently ignite the fuel/air mixture in non-automotive engines and will fit a variety of motorized equipment from personal watercraft to snow blowers. Built to handle the harsh environments associated with specialty uses, ACDelco Specialty non-automotive spark plugs are the perfect choice when performance matters.
- Use the correct deep socket size to loosen each spark plug one or two turns. NOTE: To remove spark plugs from aluminum heads, allow the engine to cool. The heat of the engine, in combination with a spark plug that is still hot, may cause the spark plug threads to strip the cylinder head upon removal.
- Brush or air blast dirt away from the well areas before removing spark plugs. CAUTION: Use goggles to protect eyes from debris when applying compressed air to spark plug wells.
- Remove each spark plug and place each one in a tray by cylinder number. This will help identify and relate any unusual condition to the cylinder involved
- 24 Months / Unlimited Miles on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details.
- ACDelco Specialty Marine Spark Plugs are everyday replacement plugs designed for reliability and efficient performance in jet boats, inboards, outboards, and personal watercraft. They can maintain stable operating temperatures under varying loads. Their high-quality copper core and outstanding suppression characteristics deliver reliable performance.
ACDelco M8 Specialty Marine Spark Plug
- Black Onyx Coating helps prevent corrosion
- Copper Core. The thermal properties of copper provide great heat transfer and increases plug durability
- Ribbed Suppressor Seal, which extends resistance and prevents spark ‘flash over’ and misfire
- Nickel-chrome alloy sheathing to help prevent corrosion on center electrode
$5.41
52 in stock52 in stock
| Make | Model | Year |
|---|---|---|
| Cadillac | Commercial Chassis | 1950 |
| Cadillac | Series 60 Special Fleetwood | 1950 |
| Cadillac | Series 61 | 1950 |
| Cadillac | Series 62 | 1950 |
| Cadillac | Series 75 Fleetwood | 1950 |
| Chevrolet | BK | 1950 |
| Chevrolet | Fleetline | 1950 |
| Chevrolet | Fleetmaster | 1950 |
| Chevrolet | Sedan Delivery | 1950 |
| Chevrolet | Stylemaster Series | 1950 |
| Chevrolet | Truck | 1950 |
| Packard | Custom Eight | 1950 |
| Packard | Deluxe Eight | 1950 |
| Packard | Standard Eight | 1950 |
| Packard | Super Deluxe Eight | 1950 |
| Packard | Super Eight | 1950 |
| Volvo | 444 | 1950 - 1961 |
| Volvo | 445 | 1956 - 1961 |
| Volvo | PV 444 | 1950 |
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