NGK 4730 Standard Spark Plug - BPR8Z, 1 Pack
- 98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating.
- High-grade alumina silicate ceramic insulator for superior strength and heat transfer.
- Cold-rolled threads to prevent cross-threading and damage to cylinder heads.
- Trivalent plating eliminates need for anti-seize and corrugated ribs prevent flashover.