105H0 (BNT0691 Idle Gear B)

Genuine Shimano Idle Gear B (part #105H0) — the idle gear is a secondary gear in the reel's gear train that helps transfer rotational power and synchronize the oscillation mechanism for even line lay on the spool. When an idle gear wears or chips, you'll notice uneven line distribution, grinding noises, and rough retrieve. Cross-references with Shimano part number BNT0691. OEM replacement ensures precise gear mesh and smooth reel operation. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano reel parts.