Autolite Resistor Spark Plug

Autolite copper plugs are designed for performance and value, backed by decades of experience and passion. Since 1936, Autolite has been a trusted leader and innovator in spark plug technology.

• Autolite copper plugs are engineered to deliver quick starts, good fuel economy, and smooth acceleration
• Copper core center electrode offers higher thermal conductivity
• Specially engineered high nickel alloy center and ground electrode provides durability and extended life
• Copper-glass seal bonds insulator and terminal post center electrode together providing full required voltage at spark gap
• Autolite copper plugs feature a full copper core electrode provides better performance in all conditions
• Gas-tight seal is 100% leak proof
• High alumina ceramic for high dielectric strength
• Leakproof, heat-fused internal seal offers maximum durability
• Multi-rib insulator prevents flash-over
• Resistor reduces radio frequency interference (RFI) and electrode erosion