Genuine Makita Synchro Belt — part no. 225081-5. Precision-molded, toothed drive belt designed to restore the correct timing and smooth roll of Makita 4" x 24" belt sanders: nominal size 100 × 610 mm with a toothed 3M-style profile (about 118 teeth), so it mates cleanly with the sander’s pulleys and tensioning system.
Fits as the direct replacement synchro/drive belt shown in Makita’s parts breakdowns for belt-sander models 9403 and 9921 — a drop-in part to get your sander running true again.
Compact, original Makita quality: the same belt specified in the service diagram (position 36) and built to the factory profile and thickness for correct tracking and quiet operation.
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