Nowadays, there are many different spark plugs to choose from with Champion Spark Plugs QC12PEPB (7953), its consistent performance; this Champion spark plug incorporates a copper core electrode for enhanced conductivity and heat regulation, resulting in long-lasting performance. A bad spark plug will cause overheating, poor fuel efficiency, and a rough idle. So whether you're having trouble starting or running your engine, Champion Spark Plugs are a terrific addition to your boating requirements. Key Features: 70k Miles of endurance Inductive Resistor Type Superior resistance to corrosion Compatible with Evinrude engines Designed to meet or exceed ISO and SAE performance requirements Fine wire and V-trimmed electrodes sharpen the focus of the spark. More power and faster acceleration than standard plugs Under all engine loads, it maintains a constant operating temperature. The Heat-Active alloy enables electrodes to attain the correct temperature. Specifications: Brand: Champion Spark Plugs SKU: 7953 UPC: 037551009916 Weight: 0.11 LBS Manufacturer Part Number (MPN): 7953 Thread Diameter: 14mm Thread Pitch: 1.25mm Seat Type: Gasket Reach: 19mm (3/4") Hex Size: 5/8" (16mm) Terminal Type: Solid Material: Platinum Type: Standard Size: 2.0mm Resistor: Yes Heat Range: 12