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Bosch Super Plus Copper Spark Plug 7404Shop All Bosch
The only iridium spark plug line engineered for both high performance and long life. The laser welded iridium tipped center and ground electrodes (Double iridium) provide exceptionally long life.
- Copper core provides broader heat range to resist pre-ignition and fouling
- OE copper spark plug with two ground electrodes
- Nickel-plated rolled threads is used for complete anti-seize and corrosion protection
- Angled, ribbed insulator design prevents misfire due to flash-over