Spark plug dating guide
Unlock the performance in your engine with Bosch Double Iridium Spark Plugs.Bosch Double Iridium Pin-To-Pin Spark Plugs represent the best of original equipment (OE) spark plug technology and are manufactured to be OE equivalent in fit, form and function.
Bosch Silver Spark Plugs are engineered for older European performance cars, as well as some motorcycle applications.
These types of vehicle engines operate at particularly high combustion chamber temperatures, increasing the wear on the electrodes.
Bosch Double Iridium Spark Plugs are engineered to deliver both high performance and long life, representing the best of OE spark plug technology.
The ultra-fine wire design and laser welded tapered ground electrode deliver optimum performance, while the iridium center electrode and platinum ground electrode help it to go the distance.
Bosch uses silver alloys in the center electrode tip to resist wear and improve spark plug efficiency.
Bosch Platinum+4 Spark Plugs deliver smoother acceleration, top fuel economy and ultimate engine performance.