This is a genuine Shimano part. Please check the parts list included with the product or the exploded diagram of the parts from the Shimano homepage.
Genuine Parts 21 Twin Power XD C3000XG Spool Cloup No 10SM8
SHIMANO SPARE HANDLE TO FIT TWIN POWER XD FISHING REELS - CHOOSE MODEL
SHIMANO Genuine 21 TWIN POWER XD Spare Spool
SHIMANO TWIN POWER XD SPARE SPOOL ASSEMBLY MODELS - C3000HG/XG / 4000XG / C5000XG. C5000XG - 17TPXDC5XG, RD18197. 4000XG - 17TPXD4XG, RD18182. C3000HG
SHIMANO TWIN POWER XD SPARE SPOOL 2017/2021 - C3000HG/XG / 4000XG/C5000XG
SHIMANO TWIN POWER XD SPARE SPOOL ASSEMBLY MODELS - C3000HG/XG / 4000XG / C5000XG. C5000XG - 17TPXDC5XG, RD18197. 4000XG - 17TPXD4XG, RD18182. C3000HG
SHIMANO TWIN POWER XD SPARE SPOOL 2017/2021 - C3000HG/XG / 4000XG/C5000XG
TWINPOWER XD C3000XG – Shimano US Fish Shop
SHIMANO Genuine 21 TWIN POWER XD Spare Spool
21 Twinpower XD C3000XG Repair, Parts Purchase:PLAT
SHIMANO Genuine 21 TWIN POWER XD Spare Spool
SHIMANO SPARE HANDLE TO FIT TWIN POWER XD FISHING REELS - CHOOSE MODEL