Hitachi 318-721 Spare Part - Magnet

Original Hitachi magnet — part number 318721 — designed as the replacement permanent magnet used in the motor/field assembly of several Hitachi/Hikoki/Metabo HPT / HiKoki power tools. It’s a compact, precision-moulded magnetic element that installs into the motor housing to restore proper magnetic flux and consistent tool performance; listed as the magnet (ref. no. 318721) for the affected tool diagrams. This is a genuine Hitachi component and is included among Hitachi parts for models in the rotary-hammer, grinder and diamond-core drill families.

Fits (example models):

- DC120VA (120 mm diamond core drill)

- DH40MRY, DH40FR, DH40MR (rotary/hammer drills)

- DH45MR (rotary hammer)

- SP18VA (sander/polisher)

- G13V / G13YC2 / G13YD (disc/grinder series)

- GP3V (electronic hand grinder)

Supplied as the single magnet replacement referenced on the parts diagrams; straightforward to fit where the original magnet has weakened or become damaged, restoring stable motor operation and preventing irregular speed or power loss.