CHAMPION SPARK PLUGS manufactured spark plugs for all types of combustion engines, they are known to be a global leader. They have contributed to the design of marine parts. SPARK PLUG SHOP PACK - 823S To maximize performance and spark plug longevity, copper plus spark plugs have a copper core center electrode. It also has a patented SAC-9 semiconductor resistor for optimal EMI and RFI suppression and a patented Ultraseal coated shell to prevent corrosion. For improved conductivity and long-term heat regulation, it incorporates a copper core electrode. It functions by generating a spark at one end and accepting high voltage electricity at the other. Your engine starts when the air-fuel mixture is lit by the spark, which causes combustion. Key Features: It makes sure that the engine starts up. It helps improve fuel mileage. There are no harmful emissions. It generates a fully operational combustion process. Specifications: Brand: CHAMPION SPARK PLUGS SKU: 823S UPC: 037551790999 Weight: 2.88 LBS Manufacturer Part Number (MPN): 823S