Sierra 118-99321 Ignition Coil for Johnson Evinrude Outboard Motors

The Sierra 118-99321 is a premium replacement ignition coil designed for Johnson and Evinrude outboard motors. This ignition coil supplies the high voltage required to fire spark plugs, ensuring reliable engine starting and smooth operation on the water.

Key Features:

• Engineered to meet or exceed OEM specifications for reliable performance
• Direct replacement for select Johnson and Evinrude outboard applications
• Durable construction designed to withstand harsh marine environments
• Quality tested to ensure proper voltage output and ignition timing
• Backed by Sierra's reputation for quality marine aftermarket parts

Sierra has over 58 years of experience manufacturing aftermarket engine parts for the marine industry. When low spark is detected or starting issues occur, replacing a worn or cracked ignition coil can restore proper engine performance. The protective casing helps prevent current leaks and arcing that can occur when coils develop cracks from age and exposure to moisture.