Best Copper Electrode

Autolite 5325-4PK Copper Resistor Spark Plug, Pack of 4

Copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof.
Cold-formed steel shell and precision rolled threads, with one-piece terminal post to add strength.
Multi-rib insulator reduces danger of "flash-over".
Resistor reduces radio frequency interference (RFI) and electrode erosion.
Full copper core electrode provides better performance in all conditions.

Copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof.
Cold-formed steel shell and precision rolled threads, with one-piece terminal post to add strength.
Multi-rib insulator reduces danger of "flash-over".
Resistor reduces radio frequency interference (RFI) and electrode erosion.
Full copper core electrode provides better performance in all conditions.

Copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof.
Cold-formed steel shell and precision rolled threads, with one-piece terminal post to add strength.
Multi-rib insulator reduces danger of "flash-over".
Resistor reduces radio frequency interference (RFI) and electrode erosion.
Full copper core electrode provides better performance in all conditions.

Copper Plus - Dependable Performance and Durability.
Copper core center electrode allows for accurate control of heat range for longer life.
Champion copper plus small engine plugs resist fouling and provide superior corrosion resistance.
Champion copper plus small engine spark plugs feature a copper core electrode that provides increased conductivity and heat control while delivering good overall wear characteristics.
Champion copper plus small engine spark plugs are built by a world leader in small engine spark plugs to deliver proven performance.

copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof.
cold-formed steel shell and precision rolled threads, with one-piece terminal post to add strength.
"multi-rib insulator reduces danger of ""flash-over""".
resistor reduces radio frequency interference (rfi) and electrode erosion.
full copper core electrode provides better performance in all conditions.

Copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof.
Cold-formed steel shell and precision rolled threads, with one-piece terminal post to add strength.
Multi-rib insulator reduces danger of "flash-over".
Resistor reduces radio frequency interference (RFI) and electrode erosion.
Full copper core electrode provides better performance in all conditions.

Copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof.
Cold-formed steel shell and precision rolled threads, with one-piece terminal post to add strength.
Multi-rib insulator reduces danger of "flash-over".
Resistor reduces radio frequency interference (RFI) and electrode erosion.
Full copper core electrode provides better performance in all conditions.

MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions.
IMPROVED DURABILITY: All Autolite spark plugs are Leak proof and come with a heat fused internal seal for long lasting durability.
CONSTRUCTION: These replacement spark plugs have a copper-glass seal which bonds the insulator and the terminal post center electrode together.
FUEL EFFICIENCY: The Autolite copper automotive replacement spark plug are guaranteed to deliver quick starts, better fuel economy and smooth acceleration.
AUTOLITE ADVANTAGE: Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. You can count on our copper plugs for performance and value, backed by decades of experience and passion.

MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions.
IMPROVED DURABILITY: All Autolite spark plugs are Leak proof and come with a heat fused internal seal for long lasting durability.
CONSTRUCTION: These replacement spark plugs have a copper-glass seal which bonds the insulator and the terminal post center electrode together.
FUEL EFFICIENCY: The Autolite copper automotive replacement spark plug are guaranteed to deliver quick starts, better fuel economy and smooth acceleration.
AUTOLITE ADVANTAGE: Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. You can count on our copper plugs for performance and value, backed by decades of experience and passion.