Yamaha AND Mercury made by Yamaha 75/80/90/100 hp carbureted 4-Stroke powerhead.  Removed from a 2001 Mercury 90hp 4-stroke (made by Yamaha) outboard that had low hours on it (serial number as pictured 0T329823).  In summary, it fits approx. 2000-2005 Yamaha & Mercury carbureted 4-stroke outboards.  It was replaced when EFI 4-stroke powerheads were introduced around 2005.  Please email me with questions.

Near perfect condition... no damage or significant wear. Was removed from a running motor, there was not water in the oil.  The journals, bearing surfaces, threads and splines are all in great shape.  

UPS Ground shipping within the Continental US ONLY for $39.