Makita 135946-2 — Valve Stem Assembly
Restore reliable air control and consistent firing in your Makita finish nailer with this genuine Makita valve stem assembly. Designed as a direct replacement for the tool’s internal valve, the part restores the sealing surface and valve action that control nail discharge and air flow. The assembly includes the small sealing O‑ring (listed as O‑ring 3, 3 mm) used to maintain the air seal in the valve bore. Compatible with Makita finish nailer models DBN600 this is the exact Makita part number shown in the parts diagram. Easy to swap into the valve housing — install the new stem and O‑ring, reassemble the valve components, and the nailer’s cycling and seal performance should be restored.
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