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The TROY-BILT AF-42904 is a replacement hopper bag designed for use with compatible TROY-BILT lawn and garden equipment. The hopper bag serves as the grass-catching collection unit that attaches to the discharge chute of a walk-behind mower or similar outdoor power equipment, capturing clippings during the mowing pass. This part is a direct OEM-style replacement intended to restore full collection function when the original bag is torn, worn, or damaged. Installation is handled by homeowners and outdoor power equipment technicians alike.
This hopper bag is suited for residential lawn care applications where clipping collection is preferred over mulching or side discharge. It is a TROY-BILT-branded component sourced to match original equipment specifications. Technicians and service centers stocking TROY-BILT parts will recognize the AF-42904 part number as the correct replacement bag reference for applicable units.
Designed as an OEM-style replacement hopper bag for compatible TROY-BILT walk-behind mowers and lawn and garden equipment. Confirm fitment using the AF-42904 part number against your equipment model before ordering.
Hopper bag replacement is a no-tool or minimal-tool procedure on most walk-behind mower platforms. Disengage the blade, shut down the engine, and allow the equipment to come to a complete stop before removing or installing the bag. Ensure the bag frame seats fully into the discharge chute bracket and any retaining clips or hooks are fully engaged before resuming operation.
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