Husqvarna 532173437 Flat Idler Pulley For Husqvarna/Poulan/Roper/Craftsman/Weed Eater OD 3-3/4-inch, Flat OD 2-7/8-inch, Flat width 1-inch Current part number 532173437 replaces previous part numbers 165888 and 173437. Replacement part for many brands including Husqvarna, Poulan, Poulan Pro, Roper, Sears/Craftsman, and Weed Eater Overall width 1-3/8-inch ID 3/8-inch Offset 3/8-inch 1-year warranty for defects in material or workmanship