Bosch FB703 Copper Core Spark Plug

The Bosch FB703 is a copper core spark plug engineered to deliver reliable ignition performance in a wide range of gasoline-powered engines. Bosch spark plugs are manufactured to OEM-grade standards, offering dependable cold starts, smooth idle, and consistent combustion across the RPM range.

Key Features:

• Copper core center electrode for excellent thermal conductivity and reliable ignition
• Nickel-plated shell resists corrosion and ensures easy installation and removal
• Ribbed insulator design prevents flashover and electrical leakage
• Precision gap set at the factory for consistent spark and reduced misfires
• High-purity alumina silicate insulator provides superior dielectric strength and heat dissipation
• Meets or exceeds OEM specifications for direct-fit replacement

The Bosch FB703 is a trusted replacement spark plug suitable for passenger cars, light trucks, and other gasoline-powered applications. Its standard copper electrode construction provides a cost-effective solution for routine tune-up and maintenance intervals.