Nice clean used Mercury 8 / 9.9 HP 4-Stroke 20" Long Shaft Lower Unit Assembly 

Non-bigfoot model

Mercury assembly diagram part # 8M0158633

Off a 2006 Mercury 9.9 HP 4-Stroke motor

Super clean gearcase, it does appear to have been repainted or an additional coat has been applied

In good mechanical working condition.  Shifts as it should, prop shaft and driveshafts turn nice and smooth

Oil is super clean.  No signs of water or debris in it

PLEASE REFERENCE Part number and review each and every photo to make sure this lower will fit your motor before buying