Autolite 4263 Copper Resistor Spark Plug (1 Pack)

Autolite's Copper Core Spark Plugs are designed to deliver exceptional performance, featuring a full copper core electrode that provides superior thermal conductivity for optimal performance in all conditions. These spark plugs are engineered to ensure quick starts, good fuel economy, and smooth acceleration, making them the industry standard.

The copper-glass seal in these spark plugs bonds the insulator and terminal post center electrode together, creating a gas-tight, 100% leak-proof seal that guarantees full required voltage at the spark gap. The cold-formed steel shell and precision rolled threads, combined with the one-piece terminal post, add strength and durability to the plugs.

The multi-rib insulator reduces the risk of "flash-over," preventing misfires, while the resistor helps to reduce radio frequency interference (RFI) and electrode erosion. This construction ensures long-lasting performance and reliability.

Autolite has been a trusted leader and innovator in spark plug technology since 1936, and their Copper Core spark plugs are backed by decades of experience and passion. You can count on these plugs to provide maximum performance and improved durability, delivering the quick starts, better fuel economy, and smooth acceleration that you demand.

The Autolite Copper Core Spark Plugs are designed to be your industry standard, with a full copper core electrode that offers superior thermal conductivity for optimal performance in all conditions. These replacement spark plugs feature a leak-proof, heat-fused internal seal for long-lasting durability, ensuring that you can rely on them for years to come.

With their copper-glass seal, cold-formed steel shell, and precision rolled threads, Autolite's Copper Core Spark Plugs are built to last and provide exceptional performance. The multi-rib insulator and resistor further enhance the plugs' capabilities, reducing the risk of misfires and electrode erosion, respectively.

As a trusted leader in spark plug technology, Autolite has a reputation for innovation and quality. Their Copper Core Spark Plugs are backed by decades of experience and passion, making them a reliable choice for your vehicle's needs. Whether you're looking for quick starts, improved fuel efficiency, or smooth acceleration, these spark plugs are the industry standard for maximum performance and value.

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