104X0 (RD9447  Oscillating Gear)

Genuine Shimano oscillating gear (part #RD9447, SKU 104X0) — the gear that drives the worm shaft oscillation mechanism in your spinning reel, moving the spool up and down during retrieve to distribute line evenly across the spool face. Proper oscillation is critical for tangle-free casting and maximum line capacity. A worn oscillating gear causes uneven line lay, bunching, and reduced casting distance. Cross-references with Shimano part number RD9447. OEM replacement restores factory-precise spool travel for smooth, even line distribution every retrieve. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano spinning reel parts and expert oscillation system repairs.