Denso TT Iridium Spark Plug 4718
Durability of an OE style plug combined with power & torque of high performance.
- 0.4 mm iridium center electrode: world's smallest diameter that maximizes firing potential
- DENSO patented optimized iridium-rhodium alloy formula: highest concentration of iridium vs. competitors for greater durability
- 0.7 mm needle tip ground electrode: promotes higher spark energy and less heat quenching
- DENSO patented 360 degree laser welding process: ensuring exceptional quality bond and structural strength with the iridium center electrode