1.Bosch OE Fine Wire Double Platinum Spark Plugs feature a platinum firing pin and ground electrode inlay that provide 3X longer life compared to standard copper plugs 2.Unique 360 degree, continuous laser welded fine wire platinum firing pin design delivers better corrosion resistance, ignitability, and performance 3.Nickel-plated rolled threads provide superior resistance to corrosion and do not require anti-seize for installation 4.Bosch Double Platinum spark plugs are pre-gapped at the factory and ready to install right out of the box - gap adjustment prior to installation not required 5.Meets or exceeds manufacturer design requirements for OE fit, form, and function for modern gasoline engines 6.Compatible with select vehicles (Note: engine affects fitment - verify specific fitment details with amazon confirmed fit fit checker above): BMW: 11-13 135i, 13 135is, 14 235i, 11-15 335i, 14-16 335i GT xDrive, 11-15 335i xDrive, 14-16 435i 7.Compatible with (continued): BMW: 15-16 435i Gran Coupe, 14-16 435i xDrive, 15-16 435i xDrive Gran Coupe, 11-16 535i, 10-17 535i GT, 11-17 535i GT xDrive, 11-16 535i xDrive, 11-13 550i, 10-12 550i GT, 10-12 550i GT xDrive, 11-13 550i xDrive, 12-18 640i 8.Compatible with (continued): BMW: 13-19 640i Gran Coupe, 14-18 640i xDrive, 14-19 640i xDrive Gran Coupe, 12 650i, 12 650i xDrive, 13-15 740i, 13-15 740Li, 13-15 740Li xDrive, 09-12 750i, 10-12 750i xDrive, 09-12 750Li, 10-12 750Li xDrive, 10-15 760Li