136566-5 supersedes older part numbers: 136450-4

Makita 136566-5 — Bearing Box Assembly (original Makita). Precision replacement bearing / gearbox housing for right-angle drills; installs in the gear / spindle area and is listed as Bearing Box Ass’y (part no. 136566-5) for model DDA450

The assembly is shown in Makita parts breakdowns as the housing that includes the sealing O‑rings (O‑ring 53 and O‑ring 35), so the unit arrives complete with the internal seals.

Fits Makita right-angle drill models DDA450 / DDA451 angle‑drill — a direct, original Makita bearing box replacement when servicing those gearboxes. This genuine Makita part is a compact, purpose‑built power tool parts replacement to restore smooth spindle support and proper sealing in those models.

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