Original DeWalt gearcase (housing section) N459094 — a molded gear housing that locates and secures the drill’s internal gears and bearings, supplied as the complete gearcase/housing section for direct replacement.

Fits DeWalt cordless drill/hammer-drill models in the DCD777 / DCD778 family — for example DCD777, DCD777P1‑XJ and multiple DCD778 Type 1/Type 2 variants (DCD778S2T, DCD778P2T, etc.) as listed by parts suppliers.

This is an original DeWalt part (manufacturer number N459094), molded for a precise fit so screws, bearings and gear shafts align without modification — a straightforward drop‑in replacement that minimizes repair time and restores proper gearbox alignment.

If you’re repairing a drill and only need the gearbox housing rather than the entire transmission assembly, this genuine DeWalt gearcase is the correct numbered replacement to look for among DeWalt parts.

Suitable for repairs where durable, correctly dimensioned power tool parts are required to restore function and maintain tool reliability.