Replacement gear housing cover (part no. 140R13-8) — complete gear housing cover for the Makita JR3051T reciprocating saw. This original Makita component restores the gearcase enclosure and sealing surface, protecting internal gears and bearings while providing the correct mounting points for the gear assembly and seals. This genuine Makita part is listed in the JR3051T parts breakdown and is a direct fit for the JR3051T model.
The cover assembly includes the X‑ring sealing location (X‑ring 14) and the mounting interfaces used with pan‑head M5 fasteners (examples used on the tool include M5×16, M5×25 and M5×35), so you’ll have the correct alignment and sealing when reassembling the saw. If your JR3051T housing is cracked, worn, or missing mounting bosses, this part returns the gearcase to original specification — a simple, maintenance‑focused replacement from Makita parts that gets your saw back in service.
Jump straight to the Makita spare parts diagrams:
Browse our full range of Makita reciprocating saw parts.
