10541 (BNT1700 Wormshaft)

Genuine Shimano Wormshaft (part #10541) — the wormshaft (oscillating gear shaft) drives the spool up and down during retrieval, creating the even line lay pattern that prevents tangles and ensures smooth casting. A bent or worn wormshaft causes uneven line distribution, lumpy spool profiles, and poor casting distance. Cross-references with Shimano part number BNT1700. OEM replacement ensures precise oscillation and factory-perfect line lay. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano spinning reel parts.