Autolite 106 Copper Core Nickel Spark Plug features a cold-formed steel shell with precision-rolled threads, a full copper core electrode for better performance, and a one-piece terminal post to add strength. The ignition plug uses a copper-glass seal that bonds the insulator and terminal post-center electrode together. This ensures full voltage at the spark gap and a 100 percent leak-proof, gas-tight seal. Autolite features an extensive application guide to cover just about everything with an internal combustion engine. Keep your engine running smoothly and reliably with Autolite replacement copper core spark plugs.Feature:

• One-Piece terminal stud provides a reliable high voltage electrical connection
• High alumina multi-rib insulator helps prevent flash-over which can lead to misfires
• Heat-fused glass composite resistor center seal provides high performance EMI noise suppression and a 100 percent leak-proof seal
• Solid copper core center electrode provides optimal thermal and electrical conductivity for better performance in all driving conditions
• High nickel alloy side electrode resists electrical and chemical wear providing excellent durability
• 2 year limited warranty