140493-0 supersedes older part numbers: 158776-4, 158376-0
Makita 140493-0 — Guide Box Assembly (original Makita)
Restore the feed and bit-guiding function on your Makita cordless autofeed screwdriver with the genuine Makita Guide Box Assembly, part number 140493-0. This complete guide-box unit replaces the guide/guard assembly used on Makita autofeed screwdrivers and comes as the assembled component (includes the guard and internal guide parts), making it a direct replacement where the original guide box is worn or damaged.
Fits a range of Makita autofeed models — commonly used on the BFR/BFR and DFR series and the 68xx series, for example BFR540, BFR550, BFR750, DFR540, DFR550, DFR750 and models 6842, 6843 and 6844. Confirm with your tool’s parts diagram,
Practical details: this listing is the Guide Box complete (Guide Box Assy) and the assembly includes the guard component (Makita part 346269‑5) and the small internal springs and pins called out in the parts breakdown. The service diagrams show the assembly is held with M4 screws (e.g., countersunk M4×12 and thumb screws M4×28 referenced in the parts list), so it mounts to the existing casing without modification.
If your autofeed screwdriver has a damaged guide or worn feed path, replacing the guide box with this original Makita assembly restores proper alignment and feeding.
Jump straight to the Makita spare parts diagrams:
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