NGK Iridium BKR4EIX Spark Plugs

The fine iridium center electrode in these NGK Iridium IX spark plugs is a key feature, offering six times the durability of platinum. This advanced alloy has a very high melting point, making it well-suited for today's higher-temperature engines. These plugs are a solid option for upgrading from standard nickel alloy plugs, especially in modified or performance applications. You can expect improved starting, smoother idling, and a more responsive throttle. The trivalent metal plating on the plug body helps prevent corrosion and seizing, which makes installation and removal easier down the road. This set fits a wide range of vehicles, including many Buick Skylarks, Chevrolet Camaros, and Dodge Ram trucks.

NGK designed these Iridium IX plugs to provide outstanding acceleration and high fuel efficiency. The tapered cut ground electrode also contributes to better starting and throttle response. Because the iridium alloy can withstand higher temperatures, these plugs are built for durability, even in demanding conditions. If you're looking to get the most out of your engine, these NGK plugs are a popular choice.