Bissell ProHeat Series replacement Tank-in-tank Water Bucket Assembly.   Water Tank assembly includes; carrying handle, tank lid, bottom tank, clean water bladder, baffle, and the float.   This part has been redesigned, and the drain cap which was required on some older ProHeat models is no longer needed with this new design.  This complete tank assembly now fits ALL Bissell ProHeat (1 models not the ProHeat 2X) models, including model numbers; 1620 series, 1685 series, 1692 series, 1693 series, 1693, 1694, 1697, 1698, 1698-1, 1699, 1699-1, 1699-5, 1699-8, 1699-A, 1699-B, 1699-F, 1699-P, 7901, 7920, 8905 And 8910.  Genuine Bissell Tank in tank assembly, part number 015-9043, or 0159043.