NGK IX Iridium Spark Plug Box of 4 (BPR8EIX)

This is a box of four NGK IX Iridium spark plugs, part number BPR8EIX. These plugs are designed for modified or high-performance engines, or as a solid upgrade over standard nickel alloy plugs. They feature a fine iridium tip that ensures a durable and consistent spark, which helps with starting, idling, and throttle response. The iridium alloy has a very high melting point, making it well-suited for today's hotter-running engines.

The construction includes trivalent metal plating on the shell for good resistance to corrosion and seizing, making them easier to remove later. The tapered cut ground electrode is another detail that helps improve starting and overall engine performance. These plugs are a popular choice for those looking to get the most out of their engine, offering improved acceleration and fuel efficiency.

This particular plug, the BPR8EIX, is a colder heat range than OE for some applications, which can be beneficial in high-performance or modified engines to help prevent pre-ignition. They fit a wide variety of vehicles, including many Porsche 911 models, various Polaris personal watercraft, and Yamaha motorcycles.