Makita 123443-0 — Gear assembly (gearbox) — restores two‑speed drive and smooth power transfer in compatible Makita hammer/driver‑drills. This is the genuine Makita preassembled gear unit (complete gearbox pack) that replaces a worn or damaged transmission so your drill recovers correct speed selection and drive engagement.
Fits common 18 V compact hammer driver‑drill models in the XPH10 / DHP482 — examples include XPH10, XPH10R, XPH10Z and the DHP482 / DHP482D / DHP482Z / DHP482RAE / HP482D variants.
What’s included and why it matters:
- Single, fully assembled gear/gearbox unit (drop‑in replacement — no gear‑by‑gear rebuilding required).
- Restores the two‑speed mechanical gearbox function so both low and high ranges operate correctly and the chuck receives proper torque transfer.
- Supplied under Makita part number 123443-0 (also referenced as 1234430 in some parts listings).
If your drill is showing slipping, grinding from the transmission area, loss of one speed range, or inconsistent torque, replacing the Makita 123443-0 gear assembly will return the tool to original drivetrain performance without additional machining or modification.
(Use the part number 123443-0 when matching the exploded‑view diagram for your specific model to ensure compatibility.)
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