This is the upper unit or gearbox for a Volvo Penta Saildrive 130S-B part number 3841244. I bought it used on Ebay and robbed the lower unit from it as my lower unit had corrosion. I have not used this unit but was assured that it was working having been removed from a yacht that was to be re-engined. It turns freely and the oil is clean. The lower leg was transferred to my boat and worked perfectly. The stated gear ratio is 2.19 but the upper unit is the same for both the 2.19 ratio and the 2.47 ratio as the ratio is determined by the bevel gear set fitted to the lower leg. This could therefore be used with either a 2.19 or a 2.47 ratio lower leg.
eBay