Here we have a Mercury H lower unit for use on two cylinder Mercs with the H tower. It is in very good condition. Housing has no breaks, cracks or welds. The driveshaft splines are in nice shape.No water or metal in the gear oil. Has lubriplate 105 in it. The drive shaft measures 14-7/16 from the top of the housing and has 6 splines. We recommend replacing the impeller as this lower unit has not been in service for a few years. Check out our store GENIEMARINE for more great deals on new, used, nos, rare, obsolete, nla and hard to find parts! The item "Vintage Mercury H outboard racing lower unit" is in sale since Wednesday, April 27, 2016. This item is in the category "eBay Motors\Parts & Accessories\Boat Parts\Outboard Engines & Components\Other". The seller is "geniemarine" and is located in Grand Blanc, Michigan. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, RU, IL, to Mexico, to New Zealand, SG, to Switzerland, NO, SA, UA, AE, QA, KW, BH, HR, MY.