Sierra 18-5128 Ignition Coil

Sierra 18-5128 Ignition Coil is an aftermarket marine component manufactured by Sierra Marine (a Dometic brand) designed to replace the original factory coil on Yamaha outboard motors. It primarily serves as a direct replacement for Yamaha OEM part number 6R3-85570-01-00.

Engine Compatibility

This coil is engineered for late-model Yamaha V4 and V6 two-stroke outboard engines. It is compatible with the following specific setups:

• 115 HP, 130 HP, & 150 HP: Models from 1994 to 2004.
• 175 HP: Models from 1994–1995, 1997–1998, and 2000.
• 200 HP: Models from 1994 to 1998.
• 225 HP: Models from 1997.
• B115 HP: Models from 1998 to 1999.
• C115 HP: Models from 1997 to 1998.