213631-8 supersedes older part numbers: 5196019410
Original Makita 213631-8 — listed as O‑RING 4 — is a small Makita-specified rubber sealing ring used in fuel/carburetor and pump areas on selected petrol trimmers and similar tools.
Fits examples: RBC2110, RST210, RST200 and RBC201 (shown as part 213631-8 in Makita parts for these models).
Designated O‑Ring 4 (nominal 4 mm inside diameter in standard O‑ring sizing), it installs as a direct, like‑for‑like Makita replacement to restore proper sealing without modification.
If you need genuine Makita replacement seals, this small part is an inexpensive way to fix leaks or pressure loss — a useful item among Makita parts when servicing outdoor equipment and other small-engine power tool parts.
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