Genuine Bosch ratchet sleeve 1610499055 — a precision replacement sleeve that sits in the ratchet/index assembly of the demolition-hammer impact mechanism to keep the striker and catch disk aligned and engaging correctly. (Part shown as “Ratchet Sleeve” position 16 in Bosch exploded parts lists for the GSH series.)

Direct-fit applications include Bosch GSH 5 CE (type 3611C21xxx) and related GSH models, and the part also appears in parts lists for Bosch GSH 388 and certain Bosch 11321 EVS (3611C21010) assemblies — check your tool’s type number to confirm compatibility.

Supplied as a single, original Bosch replacement (part no. 1610499055; sometimes listed as 1 610 499 055). This genuine Bosch sleeve is listed among Bosch power tool parts for the GSH series and is the exact-fit component used in the hammer’s ratchet mechanism.

Note: the listing names and model-type references above come from Bosch power tool parts breakdowns and spare-parts listings for the GSH/11321 series; use the exact type number stamped on your tool housing to confirm match.

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