Bosch Filter Element - 1609203H78

Original Bosch filter element — part no. 1609203H78 — replacement intake/dust filter for the Bosch GHG 660 LCD hot‑air gun. It’s the compact filter cartridge that sits in the air intake (exploded‑view position 28) and is designed to catch coarse debris and protect the blower/motor air path so the tool keeps proper airflow and temperature control.

Fits Bosch GHG 660 LCD series tools (check the type number on your tool: common type references include 0 601 944 703 / 0 601 944 737 and 0 601 944 741 / 0 601 944 708 — listed as compatible with spare part 1609203H78). Replace the filter if it’s clogged or damaged to restore correct air flow and prevent overheating.

Easy to install — the original Bosch replacement is a direct fit for the filter cavity shown in the service diagram and is sold as the single filter element for that location.