10H4E (RD15166 Idle Gear C Shaft)

Genuine Shimano Idle Gear C Shaft (part #10H4E) — this small but critical shaft supports the idle gear assembly in Shimano spinning reels, enabling smooth oscillation of the spool during retrieve. A worn or bent idle gear shaft can cause uneven line lay, binding during the retrieve, or a rough cranking feel. Cross-references with Shimano part number RD15166. OEM replacement ensures factory-spec fit and reliable oscillation mechanics. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano spinning reel parts.