Report Oil Pressure Sender. in Engine & Ancilliaries/Gearbox Posted April 26 Hi Guys I have a friend that has put a Rover V8 4.0 into his Excel ( I don't agree with doing this but each to there own ). He requires a new Oil Pressure Sender. The gauge he has is a Stewart Warner 0-100 psi which I think equates to 0-7 Bar. It has 240-33 ohms with low 20psi alarm ( what ever that means ) It also has a 1/8 NPT thread. Can anybody please tell me where to get a correct Oil Pressure Sender from. When I look there are so many sizes, types, threads and even prices from £10 - £100 So your help to find one would be most appreciated. Regards. Ian.