The spark plug is mainly made of nickel alloy, with excellent performance such as high temperature resistance, resistance, and not easy to be oxidized, which fully meets the test that should be passed by Manufacturer Part Number 12120037607. This product belongs to the 3 Series 5 Series 7 Series E46E60E53E66 replaceable car spark plug accessories. You don't need to worry about the situation that it cannot be adapted, because each product has undergone countless rigorous tests and tests before leaving the factory to that it can bring users the most extreme experience. Secondly, the spark plug is easy to replace and install. You can easily replace it without spending too much time and energy. The product has a long service life and high safety, which provides a layer of protection for your driving trip. Colour: Material:Nickel alloy Package Contents: 6 * Car spark plugs Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.