Autolite 458DP Copper Automotive Spark Plug (1 Pack)

The Autolite Copper Core Spark Plugs are designed to deliver a range of benefits, including quick starts, good fuel economy, and smooth acceleration. The copper-glass seal bonds the insulator and terminal post center electrode together, ensuring full required voltage at the spark gap and creating a gas-tight, 100% leak-proof seal.

The copper core spark plugs feature a cold-formed steel shell, 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 helps to reduce radio frequency interference (RFI) and electrode erosion.

The full copper core electrode provides better performance in all conditions, making the Autolite Copper Core plugs the industry standard. With a maximum performance guarantee, these spark plugs boast a full copper core electrode that delivers higher thermal conductivity for improved performance under various conditions.

Autolite's commitment to durability is evident in the leak-proof design and heat-fused internal seal of its spark plugs, ensuring long-lasting performance. The copper-glass seal, which bonds the insulator and terminal post center electrode, is a key feature that contributes to the overall construction and reliability of these replacement spark plugs.

Fuel efficiency is another key benefit of the Autolite copper automotive replacement spark plugs, which are guaranteed to deliver quick starts, better fuel economy, and smooth acceleration. This is a testament to Autolite's dedication to innovation and performance in the spark plug technology industry.

Since 1936, Autolite has been a trusted leader and innovator in spark plug technology, and customers can count on the brand's copper plugs for both performance and value, backed by decades of experience and passion.

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