This listing includes 12 new Hustler 039677P wheel bearings for compatible Hustler lawn mower applications. The wheel bearing supports caster wheel rotation during mower operation. Replacing worn or damaged bearings with the correct replacement part can help restore smooth wheel movement and support proper caster assembly operation. Product Details Brand: Hustler Part Number: 039677P Quantity: 12 wheel bearings Condition: New Part Type: Wheel Bearing / Front Caster Wheel Bearing Equipment Type: Selected Hustler zero-turn lawn mowers Packaging: Multipack containing 12 individual bearings Fitment: Confirm using the manufacturer's parts diagram for your exact mower model and serial number Important Fitment Information Supplier listings reference selected Hustler Super Z, X-One, and Super S applications. This is not a guarantee of compatibility with every model in those ranges. Check your mower's model and serial number before purchasing.