Bosch OE Fine Wire Double Platinum Spark Plugs feature a platinum firing pin and ground electrode inlay that provide 3X longer service life compared to standard copper plugs Unique 360 degree, continuous laser welded fine wire platinum firing pin design delivers better corrosion resistance, ignitability, and performance Nickel-plated rolled threads provide superior resistance to corrosion and do not require anti-seize for installation 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 Meets or exceeds manufacturer design requirements for OE fit, form, and function for modern gasoline engines Compatible with select vehicles (Note: engine affects fitment - verify specific fitment details with amazon confirmed fit fit checker above): BMW: 2008-10 128i, 2006-10 130i, 2006-10 323i, 2006-10 325i, 2006 325xi, 2007-10 328i, 2009-10 328i xDrive Compatible with (continued): BMW: 2007-08 328xi, 2006 330i, 2006 330xi, 2006-10 525i, 2006-07 525xi, 2008-10 528i, 2009-10 528i xDrive, 2008 528xi, 2006-07 530i, 2006-07 530xi, 2010 X1, 2007-10 X3, 2007-10 X5, 2006-10 Z4; SAAB: 2006-09 9-3 Original Product Guaranteed - Imported from USA/Europe - the price displayed on the product page is inclusive of logistical expenses, transaction fees, packaging, shipping, and handling charges necessary for shipping to your destination country. Product Description Bosch Double Platinum Spark Plugs are engineered to extend performance life and durability. The fine wire design of the center electrode improves ignitability and performance in your engine, while the platinum tip on the center electrode and platinum inlay on the ground electrode deliver a 3X longer service life than standard copper plugs. This design reduces gap erosion and increases durability and performance life while meeting original equipment specifications for double platinum spark plugs. Nickel plated, rolled threads, combined with a factory preset gap, ensure simple, easy installation right out of the box - no anti-seize or gapping necessary. brand_description Bosch Automotive