AUTOLITE 4345 Spark Plug 4-Pack Copper

The AUTOLITE 4345 Copper Spark Plug is designed with a full copper core electrode to support consistent performance across operating conditions. Its copper-glass seal bonds the insulator and terminal post to the center electrode, helping provide the required voltage at the spark gap while maintaining a gas-tight seal.

A multi-rib insulator helps reduce the risk of flash-over, while the one-piece terminal post adds strength. The integrated resistor is designed to reduce radio frequency interference (RFI) and electrode erosion. A cold-formed steel shell features precision-rolled threads for reliable installation.

Before purchasing, verify all cross-reference listings to confirm this AUTOLITE 4345 spark plug is appropriate for your application.

Features:

• Copper-glass seal bonds the insulator, terminal post, and center electrode while supporting a gas-tight seal
• Multi-rib insulator helps reduce the danger of flash-over
• One-piece terminal post adds strength
• Resistor helps reduce radio frequency interference (RFI) and electrode erosion
• Cold-formed steel shell with precision-rolled threads
• Full copper core electrode provides performance across operating conditions
• Verify all cross-reference listings before purchase