Bosch 9603 Double Iridium Spark Plug, Up to 4X Longer Life (Pack of 1)

• Double Iridium firing pin and ground electrode inlay provide 4X longer service life compared to standard copper plugs
• 0.6mm fine wire firing pin provides superior ignitability and performance
• 360° continuous laser weld fuses corrosion resistant iridium firing pin to base for increased durability
• 7 year performance satisfaction guarantee
• Original equipment, pre-gapped replacement delivering optimum fit, form and function