Engine Couplers

MerCruiser engine couplers and coupling assemblies, the splined drive connection between the engine flywheel and the stern drive input shaft. The current assortment includes Sierra couplers and coupler kits, Mercury Marine coupling assemblies, and EMP equivalents, along with the studs and screws that mount them.

What You'll Find:

  • Engine couplers and coupler kits
  • Coupling assemblies
  • Mounting stud kits and screws

Before Ordering:

Confirm the engine family and displacement, the drive type, the spline count and coupler diameter, the serial-number range, and the existing part number before selecting a replacement.