Good used OMC / Volvo SX-M Lower Unit, had very clean gear lube and spins over VERY smooth. Removed from a 1.51 upper/lower set-up.  Replacement for Lower Units (1.51 / 1.79), which is a 18/26 gear set.  Has been touch up painted. 
THIS LOWER IS FIRST VERSION FROM EARLY TO MID 90'S.  LOWER DOES NOT HAVE THE RECESS FOR THE O-RING AROUND DRIVE SHAFT, THE O-RING IS IN THE BOTTOM OF UPPER.  THIS CHANGED AFTER THE MID 90'S. 
PLEASE KNOW YOUR FITMENT OR ASK.
Picture of tag on the upper is shown for a reference. This is for lower only.  

 Please check other listings.
 
ANY SHIPPING OUTSIDE CONTINENTAL U.S. WILL BE ADDITIONAL.