1609B04188 supersedes older part numbers: 1609B04000

Genuine Bosch lower blade guard — part no. 1609B04188 — replacement protective cover for the underside of the blade on Bosch sliding mitre saws. It’s a factory-fit plastic lower guard designed to restore the original blade protection and routing of chips so your saw operates safely and as intended.

Fits (examples): Bosch GCM 80 SJ / GCM 800 SJ / GCM 8000 SJ, GCM 8 SJL and certain GCM 18V‑216 variants — the part is listed in the exploded parts for these GCM-series saws.

Notes you’ll find useful: these GCM saws use a 216 mm diameter blade (30 mm bore), so this lower guard is matched to that geometry and the saw’s factory mounting/clearances. It’s supplied as the original Bosch replacement to ensure correct fit and function. - Cross reference with the 10 digit product code from the side of the machine to confirm fit)

If the guard on your saw is cracked, warped, or missing, replacing it with this original Bosch part restores the intended protection and chip control without modifying the tool.

Browse our full range of Bosch mitre saw parts.