Prime Guard ACDE41983 Double Platinum Spark Plug - Replaces ACDelco 41-983 / 12578277

The Prime Guard ACDE41983 is a double platinum replacement spark plug designed as a direct equivalent to ACDelco part number 41-983 (GM OEM part number 12578277). Built with a copper core center electrode tipped with double platinum pads, this plug delivers reliable ignition performance and long service life across a wide range of gasoline engines.

Key Features:

• Double Platinum Electrodes: Platinum pads on both the center and ground electrode reduce wear and maintain consistent voltage demands over extended service intervals
• Copper Core Construction: Pure copper core promotes cooler electrode temperatures for improved fouling resistance and durability
• One-Piece Fired-In Suppressor Seal: Blends three glass types to form a gas-tight seal that helps reduce radio frequency interference (RFI), regulates spark energy, and withstands compression pressures
• Cross-Reference Numbers: Replaces ACDelco 41-983, GM 12578277, and 12561454
• Sold Individually: Single plug per package

This plug is engineered to meet OE fit, form, and function requirements, making it a dependable choice for routine spark plug replacement or tune-up applications requiring double platinum construction.