Original Makita 645088-9 — Noise suppressor / suppression capacitor for angle grinders. This genuine Makita replacement part (PN 645088-9) is the small, insulated suppression capacitor used on a range of Makita grinders to reduce electrical noise, radio/EMI interference and sparking from the motor/switch assembly — restoring the quieter, more stable electrical behaviour of the tool.

What it is and why it helps: the 645088-9 is a purpose-built interference suppressor (often listed as a capacitor or noise suppressor) that mounts inline with the tool’s internal wiring. When the original unit fails or degrades you can hear increased arcing, radio interference or intermittent motor issues; swapping in this original Makita part removes that electrical noise and returns the tool to factory behavior.

Example models this part is used on (representative, commonly listed): GA7020 / GA7020S, GA7030 / GA7030S, GA7040 / GA7040S, GA7050, GA7060 series, GA9020 / GA9020S, GA9030, GA9040 / GA9050 series, plus several older 90xx large-angle grinders such as 9015B, 9027, 9029 and service models like GS5000 / GS6000. Use these model examples to confirm fit for your tool.

Fitment reference: the part appears in official parts listings and exploded diagrams for Makita grinders (for example shown as the noise suppressor item in the GA9020 parts diagram), so it is a direct like‑for‑like replacement for compatible models.

Quick purchase notes: this is the original Makita suppression capacitor sold as part number 645088-9 — a compact, low-cost repair part that is typically installed inside the rear/handle wiring compartment of the angle grinder. Replace only when the tool is disconnected from power and follow basic electrical safety when accessing internal wiring.

(Part number for ordering: 645088-9.)