BOSCH 7403 Copper with Nickel Spark Plug - Single

Bosch Copper with Nickel Spark Plugs feature a yttrium enhanced nickel-copper center electrode for a longer lasting service life compared to standard copper plugs. Additional features include a copper core that provides better heat transfer for resistance to pre-ignition, metal glass fused resistor that maximizes interference suppression, ribbed insulator design that prevents misfire due to current leakage, and nickel plated rolled threads that provide superior resistance to deterioration. Nickel plated threads eliminate the need for anti-seize, ensuring easy installation and removal. Engineered to meet or exceed Original Equipment specifications for nickel-copper core spark plugs.

• Heavy-duty yttrium enhanced nickel-copper center electrode ensures superior reliability and durability for up to 50% longer performance life vs. standard copper plugs
• Copper core provides broader heat range to resist pre-ignition and deposit build-up
• Nickel-plated rolled threads provide superior resistance to corrosion and do not require anti-seize - saving time
• Angled, ribbed insulator design prevents misfire due to flash-over
• Metal glass fused resistor maximizes interference suppression
• Compatible with select vehicles (Note: engine affects fitment - verify specific fitment details with amazon confirmed fit fit checker above): PORSCHE: 1989-95 911