Oil pressure sender from side of engine, sends the signal to the oil pressure guage, MX-5 all models 1989-2005.
Note that this is the later 'idiot' type sender that doesn't give an accurate reading, just yes there is oil pressure or no there isn't. If you want a 'proper' oil pressure reading you need an early sender unit, available new and used from us.
J5614001.. NM00255.