High quality NGK spark plug that is commonly used in modified Audi/VW 1.8T motors. These NGK copper spark plugs run colder for use in software modified cars or cars with turbo modifications. The BKR7E plugs are 1 heat range colder than the factory NGK PFR6Q plugs. These copper plugs will need replacement every 3-4 oil changes. Sold per plug. Comes with free anti-seize paste!