Honda OEM Grass Bag - 81310-758-S00
This part fits;
BAG-3813 BA - GB3 0000001-9999999 - HOPPER (BAG-3813)
BAG-R3009 BA - GB2 0000001-9999999 - GRASS CATCHER (HOPPER)
BAG-R3811 BA - GB4 0000001-9999999 - GRASS CATCHER (HOPPER)
GB4038 BA - RZAZ 1000001-9999999 - HOPPER (GB4038, GB4500)
GB4500 BA - GB7 1000001-9999999 - HOPPER (GB4038, GB4500)
GC2038 BA - HOPPER
GC3000 BA - RZBE 0000001-9999999 - GRASS CATCHER (HOPPER)
GC3800 BA - RZBF 0000001-9999999 - GRASS CATCHER (HOPPER)
This is an OEM Honda part.
Thank you for looking!