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          Mercury Mariner 31-53079A1 Lower Drive Shaft Upper Bearing Sierra 18-1164
          
         
        
        
        
        
          
- Mercury Mariner Marine Outdrive Lower Unit Drive Shaft Upper Bearing 
 
- Tapered Roller Bearing
 
- For use with Drive Shaft Upper Bearing.
 
- Manufacturer: Sierra
 
- Model Number: Drive Shaft Upper Bearing
 
- Part Number: 18-1164
 
- Also Known As:
- Mercury Mariner 31-53079A1, 
 
- OMC 509435