Autolite 2546 Copper Resistor Spark Plugs (4 Pack)

Autolite Copper Core Spark Plugs are designed to deliver exceptional performance, providing quick starts, good fuel economy, and smooth acceleration. Featuring a copper-glass seal that bonds the insulator and terminal post center electrode together, these plugs ensure a gas-tight, 100 percent leak-proof seal, which in turn guarantees the full required voltage at the spark gap.

The copper core electrode offers superior thermal conductivity, ensuring optimal performance in all conditions. These spark plugs are constructed with a cold-formed steel shell, precision-rolled threads, and a one-piece terminal post, which adds strength and durability. The multi-rib insulator reduces the risk of "flash-over," preventing misfires, while the resistor minimizes radio frequency interference (RFI) and electrode erosion.

Since 1936, Autolite has been a trusted leader and innovator in spark plug technology, consistently delivering high-quality products backed by decades of experience and passion. Autolite Copper Core plugs are the industry standard, offering maximum performance and improved durability. The copper-glass seal and heat-fused internal seal ensure long-lasting, leak-proof operation, while the copper core electrode provides better performance in all conditions.

MAXIMUM PERFORMANCE: Autolite Copper Core spark plugs feature a full copper core electrode, which offers higher thermal conductivity for superior performance in all driving conditions.

IMPROVED DURABILITY: All Autolite spark plugs are engineered to be leak-proof, with a heat-fused internal seal that ensures long-lasting durability.

CONSTRUCTION: The copper-glass seal on these replacement spark plugs bonds the insulator and terminal post center electrode together, creating a secure, gas-tight connection.

FUEL EFFICIENCY: Autolite's copper automotive replacement spark plugs are guaranteed to deliver quick starts, improved fuel economy, and smooth acceleration, making them an excellent choice for your vehicle.

AUTOLITE ADVANTAGE: As a trusted leader and innovator in spark plug technology since 1936, Autolite is committed to providing high-performance, reliable products backed by decades of experience and passion.

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