Original Makita sprocket cover assembly (part 136784-5) — a direct replacement cover that houses and protects the drive sprocket and secures the guide bar on Makita 300–400 mm cordless chainsaws. This complete sprocket cover assembly is supplied as an assembled unit and is the correct genuine Makita spare part for the DUC series saws listed below.
Fits models (examples): DUC307, DUC357, DUC407.
Why this part matters: it replaces the side sprocket cover that protects the chain drive and maintains proper bar mounting and chain alignment — an essential Makita spare parts item when restoring correct fit and safe operation to an otherwise serviceable chainsaw.
Jump straight to the Makita spare parts diagrams:
Browse our full range of Makita chainsaw parts.
