Original Bosch hammer piston 1617000A00 (also listed as 1 617 000 A00) — a direct-fit replacement piston for Bosch demolition hammers. Designed to restore smooth impact and sealing inside the hammer cylinder, this genuine Bosch piston is referenced specifically for the GSH 5 CE demolition hammer (models 3 611 C21 000 and 3 611 C21 072).

Key details: the part is the hammer piston (piston striker) and is shown in Bosch power tool parts diagrams as part number 1 617 000 A00; measured dimensions listed by spare-parts references are approximately 17.6 mm (diameter) × 21.1 mm (length). Use it when replacing worn pistons, seals, or when restoring lost impact energy — it pairs with the cylinder and O‑ring listed for the GSH 5 CE (O‑ring 32.0 × 1.5 mm in the parts diagram).

This original Bosch piston is a straightforward, single-part repair option that gets your demolition hammer back to spec — (Cross reference with the 10 digit version number of your machine to confirm fit before purchasing)

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