Makita 452899-3 — original Makita top cap (top cover) for GF600 series brad nailers. Replacement top cap that restores the housing fit and alignment where the original cover is cracked, broken or missing; it’s the same molded cover shown on the GF600/GF600SE parts breakdown and secures the filter/upper housing components. Fits Makita GF600 family (including GF600SE second‑fix 16‑gauge brad nailers) and matches the factory screw bosses and mounting locations so it installs like the part it replaces. Listed as “Top Cap / Top Cover” in Makita GF600 parts lists and parts diagrams.
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