Genuine Bosch gear unit (part number 1600A001L1) — a direct-replacement transmission assembly engineered to transfer motor torque to the blade in Bosch PKS-series circular saws. It’s the internal gear/drive subassembly used on PKS-14  / PKS 16 Multi models (Bosch service diagrams list it as item 21 in the parts breakdown), so it restores original gear engagement and smooth cutting performance.

This ready-to-fit unit arrives as the complete gearbox subassembly (gears and housing preassembled) matched to the factory mounting points and shaft interfaces — install using the saw’s exploded diagram for correct alignment and fastener torques.

Fits (example models): PKS‑14, PKS‑16, PKS 16 Multi (cross reference with the 10 digit type number from the side of the amchine to confrm fit : 3 603 CB3 000 / 020 / 001). Use this genuine Bosch part when looking for reliable power tool parts to get your circular saw back to factory operation.

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