Jaguar C18197 – Sovy Black Brake Fluid Reservoir Cap
We were lucky enough to have run across one more of these extremely rare black Sovy reservoir caps from very early Series 1 E-Types. This one is in very good condition. There are some scuffs on the black plastic, and the proper aluminum float cover has a couple of small perforations which will not affect operation. The original cork float is intact, but shriveled. The switch mechanism is operational, what appears to be the original gasket is sound, and the threaded ring, while showing some aging, is quite good with nearly perfect knurling on the edge.
The consensus seems to be that this version emerged in August 1961 following the Nivocode cap that appeared on the earliest of cars. This version was used until being replaced by the white Sovy cap in approximately July of 1962. During this period, the black caps did not yet have a patent number on the face. Also note that the aluminum float cover on the black Sovy cap has four equal sized holes – two near the bottom and two near the top. The later, white caps also have four holes, but the upper holes are closer to the top and of a smaller diameter than the lower holes. This unit has the proper float cover.
Application: Jaguar E-Type Series 1 3.8; Early cars between August 1961 and July 1962.