Genuine Bosch striker pin (part no. 1617000452) — a hardened steel percussor/striker manufactured to Bosch tolerances for demolition hammers and breakers. This precision pin (often shown as position 841 in exploded diagrams) transfers the hammer action from the piston to the chisel assembly; it’s heat-treated for wear resistance and engineered to the diameter and shoulder profile that Bosch tools require for reliable impact alignment and long service life.

Fits several Bosch demolition-hammer style models and compatible equivalents — most commonly listed for Bosch GSH388 (also referenced as model 11388) and similar heavy-duty breakers; many parts diagrams list this item as the striker/percussor for those tools. If your tool uses the same striker position (POS 841) this is the direct replacement designed to restore correct impact action.

Why this part matters: a worn or broken striker pin causes loss of impact strength, misalignment of the chisel and rapid wear of surrounding components. Installing this original Bosch striker pin returns the hammer to factory-fit tolerances so the unit runs quieter, delivers full blows and avoids damage to the piston and cylinder. This listing is for the single Bosch power tool spare parts item 1617000452 — a straightforward replacement when you’re repairing breakers and other parts for power tools.

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