FITS 36", 38" AND 42". BELT REPLACES OEM# 174883, 531300766, 532174883, 174883. BLADE REPLACES 21546095, 127843, 134149, 127843, 131323, 138971, 521981601, 531307223, 704429, 127843, 134149. SPINDLE REPLACES PART NUMBERS 130794, AND 532130794. THE SPINDLE PULLEYS REPLACE 532129861, 532153535, 532173436, 532177865, 129861, 153535, 173436, AND 177865. ONE IDLER PULLEY REPLACES 173437, 532173437, 532 17 34-37, AND ONE IDLER REPLACES PART NUMBERS 104360X, 131494, 173438, 532131494, 532173438, AM103480, AND AM37321.Warning:Lead-Nickel-Cancer and Reproductive Harm