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Brand new Ignition Protected SAEJ1171 12V 50 Amp Alternator for the Mercury Racing 2.5 Liter EFI 280 HP Race Offshore Shore (ROS) and Consumer Outboards. 


This is a direct replacement for another NLA (no longer available from Mercury Marine or Quicksilver) part and includes a new multi-groove serpentine pulley. 


We carry both the early and later style to fit all 280s produced; serial numbers 0G857000 through 0T999519 are stamped on your mid-section.


Part Numbers:

857006A3, 857006T I, 834832 T, 85700


Contact Mike Hill at with any questions.

Mercury Racing 280 HP Alternator

SKU: 280A-77
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