104SL (TGT2057 Socket Cap)

Genuine Shimano Tiagra Socket Cap (part #TGT2057, SKU 104SL) — a precision-machined cap that seals and secures internal socket assemblies within the reel frame. Socket caps protect bearings, shafts, and gear train components from saltwater intrusion while maintaining proper alignment under heavy drag loads. A damaged or missing socket cap exposes critical internals to corrosion and can allow shaft play that degrades gear mesh and drag performance.
Cross-references with Shimano part number TGT2057. OEM replacement ensures a factory-spec seal that keeps your Tiagra performing at its best in demanding offshore conditions.
Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano Tiagra trolling reel parts and professional reel service.