The most reasonably priced component used on the Nh90m 1988 (j) Japan Hf05-100 / Type 2 F-18 is the Clip B10,tube.
Parts such as the F-18: Joint,oil Strn, Strainer,oil, Sw.assy.,oil Leve, Packing,oil Cap are included in the Nh90m 1988 (j) Japan Hf05-100 / Type 2 F-18 parts fiche.
The F-18 assembly is constructed from several parts from which the Sw.assy.,oil Leve is the most expensive.