We strongly suggest comparing the posted picture to your faulty unit! MOWER DECK SPINDLE BLADE BELT AND PULLEY KIT. GY20454 GY20867 GY20962 GY21098 GX22186. 42″ 44″ 46″ 48″ and 54 decks. Only use with 7 pt. Includes grease zerk, pulley lock nut, blade lock nut and washer. Mounting holes do not have thread. GX21784 GY20852 AM141035 B1JD6017 GX21786. Center Hole 7 Point Star. IDLER PULLEY PART NUMBERS. ID: 11/16 – 17.46 mm. OD: 3 5/8 – 92 mm. ID: 11/16 – 17.4 mm. OD: 5 1/8 – 130.17 mm. Height: 1 3/4 – 44.45 mm. LA145, LA155, LA165, 48 Deck. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Lawn Mowers, Parts & Accessories\Lawn Mower Parts”. The seller is “caltric” and is located in this country: US. This item can be shipped to United States.