Genuine Makita gear housing cover (part number 319214-3) — a direct replacement cover that encloses and protects the bevel-gear area on compatible Makita brushless angle grinders.
Designed to fit a range of Makita DGA grinders — for example DGA454, DGA504, DGA456, DGA458, DGA505, DGA506 and DGA508 — this cover restores the factory mounting points and dust seal interface so gears and bearings sit correctly.
The part mates with the gear housing and associated seals / bearings (service diagrams show the nearby O‑ring and bearing items that it locates and protects), so replacing a cracked or broken cover prevents debris ingress and maintains correct gear alignment.
If you need a single repair component to get your grinder back in service, this original Makita gear housing cover is a straightforward swap that keeps your tool operating as intended — a compact, purpose‑built piece from Makita’s parts list for power tool parts.
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