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Mercury & Mariner 1994-2006 3.0L 225 & 250 HP Carb & EFI Outboard Powerhead Parts Diagrams

Explore our extensive catalog of OEM-quality replacement parts for Mercury & Mariner V6 3.0L 225–250 HP outboard engines, compatible with both carbureted and EFI models from 1994 to 2006. Whether you're rebuilding powerheads, sourcing crankshaft seal kits, pistons, rod bearings, head O-ring kits, or Gasket Kits, we offer precise parts, including diagrams for accurate identification. Our selection includes rebuild kits, individual components, and performance upgrades like Red Rhino pistons (standard, +0.015, +0.030 oversizes). Serving marine professionals and DIY enthusiasts alike, we support your rebuilt projects with reliable parts and expert service.

The diagram above is for a Mercury & Mariner Powerhead for V6 3.0L 225/250 HP Carb/EFI models from 1994-2006. The following parts correspond to the numbers on this diagram:

  1. Thermostat
  2. Head O-Ring Kit

We recommend the following kits for this powerhead:

 

The diagram above is for a Mercury/Mariner Crankshaft Assembly for V6 3.0L 225/250 HP Carb/EFI models from 1994-2006. The following parts correspond to the numbers on this diagram:

  1. Rod Bearing with Cage
  2. Wrist Pin Bearings
  3. Lower Main Bearing
  4. Rod Bolt
  5. Upper Crank Bearing
  6. Center Main Bearing
  7. Crankshaft Wear Sleeve
  8. Crankshaft Seal Kit
  9. Connecting Rod

 

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16 of 16 Items