??NEWHOW 3-Pack Ignition Coil 300-8M0077471, 300-879984T01 for Mercury Optimax 75 90 115 125 150 200 225 250 HP, Replaces 339-879984T00, 8M0077471, Fits 30/40/50/60 EFI 4-Stroke & 2-Stroke Outboards

Additional Details from the Manufacturer

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More features

• Direct OEM Replacement: This ignition coil is a direct fit for Mercury outboard engines, replacing OEM part numbers 300-8M0077471, 300-879984T01, 339-879984T00, and 8M0077471. It is designed to meet or exceed OEM specifications for reliable spark output and engine performance.
• Solves Common Performance Issues: Fixes symptoms of a failing coil such as engine misfire, rough idle, hesitation, lack of power, hard starting, or stalling. Restores smooth operation and optimal fuel combustion in both 2-stroke and 4-stroke Mercury engines.
• Wide Mercury Outboard Compatibility: This 5-pin coil fits a broad range of popular Mercury models (typically 2004 and newer), including: Optimax (2-Stroke): 75, 90, 115, 125, 200, 225, 250 HP EFI 4-Stroke: 30, 40, 50, 60 HP Pro XS & Racing: 115 Pro, 175 Pro, 200 Pro, 225 Pro, 250 Pro, 225 XS, 250 XS, 300 XS
• Easy 5-Minute Installation: Direct bolt-on replacement. Simply unplug the 5-pin electrical connector, remove the mounting bolt, swap the coil, and reconnect. Critical Pre-Purchase Check: Verify your old coil has a 5-pin connector​ and part numbers 300-8M0077471 or 300-879984T01 stamped on it.
• Marine-Grade Durability: Features a sealed ABS plastic housing and corrosion-resistant components to withstand harsh marine environments (moisture, salt, vibration). Includes a 1-year warranty for peace of mind.