We are currently experiencing substantial delays with Hitachi/HiKOKI and Metabo spare parts due to the two brands merging warehouse. At this moment in time we are unable to provide confirmed delivery dates on out of stock parts, for any urgent requirements please contact us prior to ordering.
Original Hitachi plunger O‑ring — part no. 878607. This small but critical rubber seal fits on the plunger/combustion chamber of Hitachi gas and high‑pressure nailers and restores the piston/plunger seal that prevents air / fuel leakage and erratic firing.
Common example models that use this part include Hitachi / HiKOKI gas and coil nailers such as NR90GR / NR90GR2 / NR90GC2 , NV65HMC, NV90HMC, GFN3490 and NC40G. Use this part when the plunger O‑ring is cracked, flattened or the tool begins to lose power or misfire.
Genuine Hitachi part — supplied to replace the plunger seal and get the tool back to correct firing behavior; straightforward to fit during a standard service of the valve/plunger assembly.
