Bosch 1609B04071 — genuine Bosch sealing washer (closure plate) designed to restore the seal and alignment in the arbor/cap area of compatible Bosch mitre saws. This precision-formed sealing washer replaces the factory part number 1609B04071 and is finished to the tolerance needed to sit correctly under the cap and against the rubber ring in the saw’s head assembly.

Fits many Bosch CM/GCM series mitre saws, for example the GCM 8 SDE (3 601 M19 200 / 3 601 M19 201), GCM 8 SJL (3 601 M19 100 / 3 601 M19 101), GCM 80 SJ (3 601 M19 001 / 3 601 M19 004) and several GCM 800 SJ variants (3 601 M19 000 / 3 601 M19 003); it also appears in parts diagrams for the CM8S (3601M19110). Use the stamp/model code on your saw’s label to confirm fit before installation.

This is the exact sealing washer shown in Bosch parts breakdown — it works with the matching cap (BSH‑1609B04070) and the rubber ring (BSH‑1609B04072) in the cap/arboreal seal assembly, so swapping the washer as shown in the diagram restores proper sealing and part alignment.

Simple to replace and inexpensive compared with larger repairs, the Bosch 1609B04071 gets the saw back to smooth, quiet operation by preventing leaks and keeping the cap assembly centred and secure.

Browse our full range of Bosch mitre saw parts.