| This is the updated oil pressure sending unit, or switch, for all z's from 70-77. Once you install this unit you'll NEVER have to replace it again. These units are a direct bolt in, and are a very distinctive style. They have a thick black rubber coat on them, and they are a factory part. They may be more expensive than the aftermarket units, but they are definently well worth it. The original factory oil pressure sending units for all the z's from 70-83 were far from perfect. A lot of them started to give a bad signal after only being 3 or 4 years old. Many of them started leaking about the same time. They had a very high failure rate, as did ALL of the aftermarket brands. The aftermarket brands must have copied the original factory style which causes them to have a high failure rate, and give incorrect information to the gauge quite often. In 1984 Nissan released their newly redesigned oil pressure sending units for all z's to date, which was a much needed improvement. To this day I have never seen that particular model of oil pressure sending unit fail. They still give an accurate reading and I have yet to see one ever leak oil. Back in my dealership days, we use to replace a lot of them. I bought my first z new in 1978 and even that oil sending unit failed at about 55K miles. It had been reading a little inconsistant, and then it started leaking oil. By that time the new senders had come out on the market. I still own that car and that sender still works fine to this very day. We do sell the much cheaper aftermarket oil switches, but we do not recommend them. If you would like the cheaper unit, then see our other listing for it. Last updated 07/10 | 
