Fits Craftsman Fits Husqvarna Flat idler Pulley 532173438 OD 3-3/4″Product Description:One New AftermarketFlat idler PulleyPart Category:Flat idler PulleyReplacement For:Fits Roper, Fits Sears, and Fits Poulan Lawn MowersInterchangeable Part Numbers:173438, 532173438Additional Specifications:For many 12 through 22 HP front engine tractors.3.875″ (3 7/8”) OD, 0.375” (3/8″) ID. Some Listings Use Stock Images For Customer Reference – Pulley Color May Vary