HKS SUPER FIRE RACING MR45XLZ

This is the HKS SUPER FIRE RACING MR45XLZ spark plug, part number 50003-MR45XLZ. It's a well-built spark plug designed for performance applications.

The MR45XLZ features a 0.6mm center electrode with a platinum tip, which helps ensure a strong spark and consistent combustion. The ground electrode also has a platinum tip, contributing to improved durability and performance over time. This plug is built to handle the demands of higher compression or boosted engines, providing a reliable spark when you need it most.

When installing these, it's always a good idea to check the gap to ensure it's set correctly for your specific engine application. Refer to your vehicle's service manual for the recommended gap setting.