This lot of six ACDelco Professional spark plugs is a great addition to any car or truck. With a pre-gap size of 1.5mm and a thread diameter of 14mm, these spark plugs are designed for optimal performance and reliability. The center electrode core material is made of copper, while the center electrode tip material is made of nickel alloy, providing a durable and long-lasting spark.

These spark plugs have a single ground configuration and a conical seat type, with an insulator height of 51.5mm. They also have a resistor type and an approximate resistor value of 2-12k ohms. The manufacturer heat range is 3, and the spark plugs come with a 1-year warranty. The SKU number is ACD:41-601, and the hex size is 16mm. Other part numbers included in this lot are 00808709160311, 05614284, 19158002, 19302723, and 19354