Vehicle Fitment
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| Thread Diameter | |
|---|---|
| Thread Pitch | |
| Seat Type | |
| Reach | |
| Hex Size | |
| Terminal Type | |
| Overall Height | |
| Gap | |
| Electrode Material | |
| Nominal Gap | |
| Heat Range |

Iridium Long-Life Spark Plug (5090) by Denso®. Iridium Long Life Plug - Patented Iridium Alloy Plug (90% Ir) with Platinum Ground Strap. Denso's patented Iridium alloy is more durable than even Platinum, allowing the center electrode to be shrunk to only 0.7 mm in diameter. This produces a dramatic improvement in ignitability and spark plug life. Denso's patented Iridium alloy is more durable than even Platinum, allowing the center electrode to be shrunk to only 0.7 mm in diameter. This produces a dramatic improvement in ignitability and spark plug life.