Suit GQ with TD42 engines UPTO 08/1995 & GQ RD28 Engines
This sensors the temp of the engine to tell the glow plugs when to stop glowing.
This is a Genuine Nissan sensor so far superior to the aftermarket alternatives out there which may give incorrect readings and make your glow plugs run for longer than they need to.
We do have a cheaper Quality non genuine sensor also available in our online store.