NGK Standard Spark Plug Box of 4 (BR9ES SOLID)

Starting with the 98% pure copper core, these NGK BR9ES SOLID spark plugs are built to handle heat effectively. That copper core is key for dissipating heat away from the combustion chamber, which helps keep things running smoothly across a wide range of operating temperatures. This plug is designed for a wide variety of applications, from snowmobiles like the Arctic Cat Bearcat to personal watercraft like the Kawasaki JET-SKI and even some motorcycles.

The insulator is made from high-grade alumina silicate ceramic, which is known for its strength and ability to handle heat transfer. You'll also find a trivalent metal plating on the exterior. This plating is really useful because it resists corrosion and makes it easier to get the plug in and out without it seizing up, which is a common headache if you've ever dealt with older or neglected engines. NGK also uses a triple gasket sealing design to make sure no combustion gases leak out, keeping your engine running efficiently.

These are sold individually, but you'll want to order them in boxes of four if your application calls for it, like many multi-cylinder engines do. They're a solid, reliable choice for many different types of powersports vehicles.