In DENSO's TT spark plug, the TT stands for Twin-Tip. It's one step beyond traditional plugs, with premium materials on both electrodes instead of only one. The 1.1mm platinum center electrode is augmented by a titanium-enhanced ground electrode, delivering maximum ignition energy under the fiercest conditions an engine's combustion chamber can dish out.

Along with the materials, the design is unique as well: The ground electrode's free-standing firing pad reduces quenching to generate a more powerful spark. The Platinum TT is designed to offer superior consumer value, along with faster starts and improved economy. DENSO's objectives: Top Performance, Total Value.