10TG7 (RD21075 Oscillating Gear)

Genuine Shimano Oscillating Gear (part #10TG7) — this gear drives the spool back and forth during retrieval, ensuring even and uniform line lay across the spool. A worn or damaged oscillating gear leads to uneven line distribution, tangles, and reduced casting distance. Cross-references with Shimano part number RD21075. OEM replacement ensures perfect fit and factory performance. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano reel parts.