40-50 HP 1998-2007; 50-60 HP 1991-2010

The following diagram is for a Mercury/Mariner Powerhead for 3 Cylinder 40-50 HP models from 1998-2007, and 50-60 HP models from 1991-2010. The following parts correspond to the numbers on this diagram:

  1. Thermostat

We recommend the following kits for this powerhead:

The following diagram is for a Mercury/Mariner Crankshaft Assembly for 3 Cylinder 40-50 HP models from 1998-2007, and 50-60 HP models from 1991-2010. The following parts correspond to the numbers on this diagram:  

  1. Wrist Pin Bearings
  2. Rod Bearings
  3. Lower Main Bearing
  4. Upper Crank Seal
  5. Upper Crank Bearing
  6. Connecting Rod

Although not numbered on the diagram, the following items are available for purchase:

Didn't find the Outboard Part you needed?  We have many additional parts in our warehouse.  Please contact us directly to let us do a custom search for the part you need. 

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