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Denso Spark Plug Iridium Long Life – 1 Ct
DENS3421
- 100 percent pre-fired to ensure reliable operation
- Copper core center electrode for superior thermal conductivity
- Unique five-rib insulator reduces flashover and decreases voltage loss
- Dual copper and glass seal bonds the center electrode and insulator together for a gas-tight seal.
- Lasts up to three times as long as conventional plugs
