Denso Iridium TT Spark Plug 4709
Durability of an OE style plug combined with power & torque of high performance.
- 0.7 mm needle tip ground electrode, promotes higher spark energy
- 0.4 mm iridium center electrode, world's smallest diameter
- DENSO patented 360 degree laser welding process, ensuring exceptional quality bond and structural strength with the iridium center electrode
- DENSO patented optimized iridium rhodium alloy formula, highest concentration of iridium versus competitors for greater durability