Autolite 5245 Copper Resistor Spark Plugs (4 Pack)

Autolite Copper Core Spark Plugs are designed to deliver a combination of quick starts, good fuel economy, and smooth acceleration. The unique copper-glass seal bonds the insulator and the terminal post center electrode together, ensuring a gas-tight seal that is 100 percent leak-proof and providing the full required voltage at the spark gap. These spark plugs feature a cold-formed steel shell, precision-rolled threads, and a one-piece terminal post that adds strength and durability.

The multi-rib insulator of the Autolite Copper Core spark plugs reduces the risk of "flash-over" to prevent misfiring, and the resistor helps to reduce radio frequency interference (RFI) and electrode erosion. The full copper core electrode at the heart of these plugs provides better thermal conductivity, leading to improved performance in all operating conditions.

Autolite has been a trusted leader and innovator in spark plug technology since 1936, and their Copper Core plugs are the industry standard for maximum performance. The company's decades of experience and passion for innovation are evident in the design and construction of these spark plugs.

The Autolite Copper Core spark plugs are designed to be highly durable, with a heat-fused internal seal that ensures a leak-proof construction for long-lasting performance. This robust design, combined with the precision engineering of the copper-glass seal and the one-piece terminal post, contributes to the overall durability and reliability of these spark plugs.

In terms of fuel efficiency, the Autolite Copper Core spark plugs are guaranteed to deliver quick starts, better fuel economy, and smooth acceleration. This is made possible by the superior thermal conductivity of the full copper core electrode, which ensures optimal combustion and efficient engine operation.

Overall, the Autolite Copper Core Spark Plugs are a reliable and high-performing choice for automotive enthusiasts and professionals alike. With their industry-leading design, construction, and performance characteristics, these spark plugs are the perfect solution for ensuring optimal engine performance and fuel efficiency in a wide range of vehicle applications.

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