Original Bosch toothed shaft — part no. 1617000579 (listed also as 1.617.000.579) — direct replacement gear/shaft for Bosch SDS-plus rotary hammers such as the GBH 2‑26 (GBH 2‑26, GBH 2‑26 F, GBH 2‑26 DRE/DFR).

Precision-machined, hardened steel shaft with integrated gear teeth to restore correct transmission engagement inside the gearbox and eliminate play or slipping under load — a small but critical spare when you need reliable parts for power tools performance.

Sold as the single genuine Bosch replacement component, ready to drop in where the original worn or damaged shaft was removed; use the Bosch part number 1617000579 (1 617 000 579) to confirm fit with your model before installation.

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