Finished off some of the reproduction parts I need for my 1970 240Z. First up was the grease reservoir that screws into the steering rack, Part # C4366-0501P (# 25 in the parts diagram). They were used up until July 1973. The originals get brittle and brake off at the thread, none have been available for years.

We modelled up a CAD drawing from an original (brown stained part in the photo) and beefed up the section where the thread connects to the body. They are reproduced in oil/grease/UV resistant plastic and have the original JIS pipe thread to screw into the hole in the rack. Have done 50 of them so if anyone needs some let me know, I'll post an ad in the parts for sale section.

Edited December 20, 2025Dec 20 by SpeedRoo

Second reproduction part was the door dove tail. The original breaks where the screw goes through, as can be seen in the top left dove tail the metal is very thin. There was a left hand 80531-E4101and right hand 80530-E4101 part, used until July 1973. Nissan stopped making the part and replaced it with a symmetrical piece that fit both sides, part # 80530-N3400, it requires different screws to fit.

We modelled up the original style and added 1mm of extra metal to prevent breakages and the original screws are used. They were CNC machined from aluminum then tumbled to get the smooth finish the original had. We did up 50 sets, I'll post an ad up in the parts for sale section of the forum.

Edited December 20, 2025Dec 20 by SpeedRoo