Original Makita Gear Housing Complete — Part No. 144272-8.
Replacement gear housing for the Makita HR1840 18 mm (SDS‑PLUS) rotary hammer — compatible with the HR1840 110 V and 240 V versions.
This genuine Makita Gear housing assembly restores correct alignment and mounting for the gearbox, chuck and related internals (mounting bosses and pre‑machined cavities are provided to accept the tool's components), making it a direct-fit service part when the original housing is cracked or damaged.
Check that your tool’s part number matches 144272-8 before fitting to ensure the correct fit for the HR1840 series.
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