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.
Genuine Hitachi piston — part number 886291 — precision‑machined metal piston designed for gas finish nailers to restore compression, smooth cycling and consistent firing performance.
Fits example models GBNF1850, GFN1664K and NT65GS — a common item in the Hitachi parts lineup for these gas finish nailers.
Engineered to slide into the driving assembly as a direct replacement with no modification required, the piston maintains correct sealing and cycle timing so your tool returns to reliable fastener depth and fewer misfires.
Supplied as a single, ready‑to‑fit unit for routine servicing or to remedy symptoms like loss of power or sluggish cycling, this original Hitachi piston gets your nailer back on the job quickly.
