First I would like to thank Tim (Oddball) for supplying me with an old 3200/4200 track rod end to allow me to take measurements.
I trawled through dozens of track rod ends for a sensibly priced alternative, but was unable to find a direct replacement. The parameters that have to match are; length, inside thread type size and pitch, overall height, taper base diameter and angle, and outside tread size.
Every time I thought I had found a suitable unit, at least one of these parameters did not match. One that appeared to be the same as Maserati was from a Hyundai Accent 2, so I ordered one. When it arrived it looked perfect, I then discovered the taper was marginally thicker at the base. Argh!!!
Fortunately Tim had sent the steel insert that is pressed into the steering arm on the alloy hub into which the taper fits. This component is easily made in a lathe, so I measured the outside dimensions and made one with an internal taper to match the Hyundai taper of 7.5°. All that is required is to replace the Maserati insert with this one and fit the Hyundai track rod end.
I know this was not the original solution I was looking for, but it is a way to circumvent a possible problem if the Maserati track rod ends become unobtainable in the future.
It would be interesting to know what a company would charge for making a batch using CNC equipment?
One genuine Maserati track rod ends cost about £240 delivered, and the cheapest "Maserati" alternative is about £45 delivered. The Moog manufactured Hyundai unit cost £12.75 delivered and it is guaranteed for five ŷears. You can get even cheaper!
If nothing else it has been an interesting exercise and hopefully it gives both an alternative option and food for thought. If anyone does find a direct replacement, please let us know. Below are a few photos to peruse.