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Mercury / Mariner Section   or:   MerCruiser Section 
Troubleshooting Boyesen Power Reeds Sealers, Tools & Hardware

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Mercury Pistons, 

click on the blue underlined numbers.

All pistons are after-market by Wiseco, Sierra, or Aqua Power.

Pistons

Rings

  Crankshafts & Rods Gaskets&Seals Carb Kits
Bearings Cooling System Electrical System Lower Gear Case

Please select the motor type you own.

Attention: Piston pages can take up to two minutes to load @28.8
 

******TOP GUIDED OR NOT TOP GUIDED?******

It's easy to tell by looking at the forging number on the rod. Then check the chart below.
MODEL TOP GUIDED BOTTOM GUIDED
3 & 4 Cyl 646-81884 638-85321
V-6 644-818141 636-8118
 

9.9HP-70HP

 75HP-90HP

90HP-125HP

135HP-150HP

150HP-175HP

175HP-200HP

200HP-225HP