Make sure to maintain your Mazda MX-5 NA NB by using this set of 4 NGK BKR7E spark plugs. These high-quality spark plugs are known for their reliability and performance, offering improved combustion efficiency and engine responsiveness. They are designed specifically to fit the MX-5, ensuring optimal spark and longevity, resulting in smoother starts and enhanced fuel efficiency. These spark plugs are perfect for maintaining or enhancing engine performance in both standard and spirited driving conditions. They are suitable for both stock and modified engines, meeting Mazda’s quality standards for a dependable ignition system.
When turbocharging or adding any form of forced induction to an engine, it’s important to control the mixture’s detonation. Higher power levels lead to increased heat and pressure in the cylinder. Changing to a colder spark plug reduces the heat at the spark plug’s surface, which can become a hot zone and cause detonation. The stock spark plugs are BRK6E-11 or BKR5E-11, and NGK’s method is: the higher the number, the colder the spark plug. Moving to a BKR7E is the minimum jump required for turbocharging and delivers good results.
These spark plugs come gapped to 0.8mm. If you find you need to gap them lower, consider upgrading your ignition system with a Coil on Plug (COP) kit.