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Mercury Part Number Superseded: What Does That Mean?
You search for a Mercury part number from an old manual, parts diagram, or the part you just removed from your engine, only to find a completely different number listed as the replacement.
The original part may show as superseded, SST, replaced by, or no longer available under that number.
That doesn't necessarily mean the part is discontinued.
In many cases, Mercury has simply replaced the old part number with a newer OEM part number. Understanding superseded Mercury part numbers can make findi
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Oct 19th 2026