Bosch OE Fine Wire Iridum Spark Plugs feature original equipment design, materials and processes that represent advanced OE technology that delivers both high performance and 4X longer life than standard copper spark plugs Fine wire design of the Iridium center electrode firing pin provides exceptional ignitability while the copper core provides a broader heat range to resist pre-ignition and fouling Ribbed insulator design keeps flash-over causing oil, grime, and debris out of the spark plug wire or coil on plug boot, ensuring electrical energy goes into the spark plug - not around it - preventing misfire Nickel-plated rolled threads provide exceptional resistance to corrosion and do not require anti-seize - making installation quick and easy Bosch OE Fine Wire Iridium spark plugs are pre-gapped at the factory and ready to install right out of the box - gap adjustment prior to installation not required Compatible with select vehicles including, but not limited to, the following (Note: engine affects fitment - verify specific fitment details with fit checker above): MINI: 2007-12 Cooper