104YY  (RD3517  Anti-Reverse Cam)

Genuine Shimano Anti-Reverse Cam (part #104YY) — the cam mechanism that interfaces with the roller clutch to lock the rotor and prevent backward handle rotation. A worn or damaged anti-reverse cam allows the handle to kick back under load, reducing hookset effectiveness and fish-fighting control. Cross-references with Shimano part number RD3517. OEM replacement ensures perfect fit and factory performance. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano reel parts.