B1SB724 PULLEY/FLAT IDLER W/FLANG
B1SB724 PULLEY/FLAT IDLER W/FLANG
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One New Aftermarket Replacement Flat Idler Pulley with Flanges for Simplicity Lawn Tractors
This flanged flat idler pulley is a direct-fit replacement for the belt drive system on Simplicity lawn tractors and mowers. The flanges keep the drive belt tracking smoothly and prevent slippage, helping restore consistent power transfer to the cutting deck. Replaces Simplicity OEM part numbers 1685144SM, 1685144, 1603515, and 1603515SM.
Specifications
- Outside Diameter (OD): 3-5/8 in.
- Inside Diameter (ID): 3/8 in.
- Height: 1 in.
- Belt Surface (Flat): 3-1/4 in.
- Material: Heavy-duty metal
Compatible Models
Simplicity: Lawn tractors and mower decks requiring OEM part numbers 1685144, 1685144SM, 1603515, or 1603515SM - verify fitment by part number before ordering.
Replaces Part Number(s):
B1SB724, A-B1SB724-AI, 280-420, 280-107, 1685144SM, 1685144, 1603515SM, 1603515, IF5216, 7-05208, 34-017
Aftermarket Interchange Numbers
Fits Stens 280-420, Oregon 78-035, Edgewater 499021, NHC 276-9442
New aftermarket replacement part - not remanufactured, not used.
