Original Makita 450238-1 — Filter Cap. Compact replacement filter cap that secures the small intake filter in the rotary‑hammer filter housing, helping keep dust and debris out of the tool’s internal air path.
Fits several Makita rotary-hammer models : HR3210C and shown in parts diagrams for HR3540C / HR3541FC and HR3210FCT (check your tool’s parts breakdown to confirm).
This is an original Makita part listed as “FILTER CAP” (part no. 450238-1) on Makita parts lists; it mates with the small filter (Makita part 443138-2) and is supplied as a single cap for direct replacement.
If your existing cap is cracked, missing or no longer sealing the filter, the 450238-1 restores the factory fit and function so the filter can do its job again — a simple, no‑frills replacement included among Makita spare parts.
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