Genuine Makita internal spur gear 227392-4 — a 54‑tooth internal ring gear made to replace the worn gear in Makita impact-wrench drivetrains.
Precision‑cut steel construction and an internal ring‑gear profile restore smooth tooth meshing and consistent torque delivery in the hammer / drive assembly, helping return an impact wrench to proper operation.
Compatible with Makita impact-wrench models in the DTW1001 / DTW1002 — part of the Makita spare parts lineup.
Typical (approx.) dimensions: 54 teeth; outer diameter about 65 mm; bore / internal diameter about 54 mm; thickness about 13 mm — verify against your tool’s exploded parts diagram before fitting.
A direct, genuine Makita replacement for restoring drivetrain alignment and torque performance in the listed models.
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