Listed here is a USED Mercury Fuel Supply Housing Assy.  This is a Genuine OEM Mercury part NOT a cheap Chinese aftermarket replacement.  Part has some staining, surface pitting, scuffing, wear, etc. consistent with a part of its age.  FSM Housing assembly is fully operational.   The part number for the cover itself is 880596t53 which supersedes to part # 88059623.  I think it is the latter newer part number since it dosent have the drain plug which I think was the older design and original part number but dont know that for sure.  FSM Housing has the numbers KD20491210 and 8M0030450 etched into the part.   This is the housing that fits on the bottom of the vapor separating tank VST, acts like a fuel bowl, and cools the fuel with water flowing through the heat exchanger inside.  Fits on FSM part # 880133T08 superseding to p # 8M0130897 (listing for almost $1,400 new from dealer) and possibly other part numbers since Mercury has changed these pumps many times over the years.  These were used on a wide variety of 4 stroke engine platforms throughout the 2000s starting around 2007 and up model years and was used on many four stroke configurations like Command Thrust, Sea Pro, Verado, and possible others as well.  This one came from a 2019ish (not sure exactly the year) 90 horsepower engine that spent its entire life on a freshwater Orlando chain of lakes and has never seen salt water.  Pump parts failed but didnt have water in the gas or very stale fuel.  There is some fuel staining in the bottom that can be seen in pictures.  Did not try to chemically clean so you can see how it was when removed.  The housing you see pictured is the actual part you will receive with nothing extra.  Part is stored in a climate controlled parts room to prevent deterioration.  If you have any questions, need additional pictures, or need help with compatibility please feel free to contact me before purchasing and I will help you to the best of my abilities.  Thank you for your interest.  Steve MMSLLC :)