Vehicles that demand the longest service life and continuous performance, Bosch recommends fitting Double Platinum spark plugs.

Double Platinum have the centre electrode made from pure platinum, just like Platinum Plus, and also the ground electrode laser alloyed with pure platinum.

The result is a service life of 100,000km for vehicles fitted with a turbo or supercharger.

Bosch Double Platinum can be identified by blue text and rings on the insulator.