Sierra 18-5158 Ignition Coil for Mercury/Mariner EFI Outboards

The Sierra 18-5158 Ignition Coil is a high-quality replacement ignition coil designed for Mercury and Mariner EFI outboard engines. This precision-engineered component delivers reliable spark energy to ensure optimal engine performance and smooth operation across a wide range of marine applications.

Key Features:

• High-quality brass secondary post provides superior corrosion protection in harsh marine environments
• Quality heatsinks engineered for superb heat dissipation and extended service life
• Meets or exceeds OEM standards for guaranteed fitment and performance
• Designed for 30-60 HP EFI 3-cylinder and 4-cylinder Mercury/Mariner outboard engines
• Direct replacement for Mercury OEM part numbers 8M0077471, 879984T01, 879984A1, and 879984T00

This ignition coil is specifically engineered for Mercury 40-60 HP EFI 4-cylinder engines (serial numbers 0T409000-1C453839 USA, 0P153500-1C453839 Belgium) and 30-40 HP EFI 3-cylinder engines (serial numbers 0T409000-1B226999 USA, 0P153500-0P400999 Belgium). Sierra Marine products are trusted by marine professionals worldwide for their reliability and comprehensive warranty coverage.