Autolite Copper Resistor Spark Plug 646

The Autolite Copper Resistor Spark Plug (part number 646) is a direct-fit replacement built to match the original equipment part.

Features:

• The copper core center electrode aids in thermal control and improves resistance to fouling.
• Its specially engineered high nickel alloy center and ground electrode provides extended life.
• Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
• 2 year limited warranty

Specifications: