638740-6 supersedes older part numbers: 645233-6
Genuine Makita capacitor unit — part no. 638740-6. Compact noise-suppressor capacitor used in the switch/electrical assembly of Makita angle grinders. The unit is a 0.22 µF suppression capacitor rated for mains use (listed for 230 V machines), housed in a small rectangular body and supplied with three connection leads (two quick‑connect/spade style plus a spring / clip style lead) with about 100 mm lead length.
Fits a number of Makita 115 mm and 125 mm angle-grinder models in the 9553NB / 9554NB / 9555NB / 9557NB / 9558NB and GD0600 / GD0602 where it is listed as the capacitor/noise suppressor in the parts breakdown.
If your grinder’s switch assembly shows signs of electrical noise, intermittent switching, or a visibly damaged capacitor, this original Makita 638740-6 is the direct replacement that restores the tool’s intended suppression and electrical behaviour.
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