Autolite 605 Copper Resistor Automotive Replacement Spark Plug (1 Pack)

Autolite Copper Core Spark Plugs deliver quick starts, good fuel economy, and smooth acceleration.

The copper- glass seal bonds insulator and terminal post center electrode together to ensure full required voltage at spark gap, creating a gas-tight seal that is 100 percent leak-proof.

Copper Core spark plugs feature a cold-formed steel shell and precision rolled threads, and a one-piece terminal post that adds strength.

The multi-rib insulator reduces the danger of flash-over to prevent misfires, and the resistor reduces radio frequency interference (RFI) and electrode erosion.

The full copper core electrode provides better performance in all conditions.