can not figure out what this is

[oldhemiguy]

This is on top left corner of engine compartment I can not figure out what it is I know you guys know Thank you, trying in put picture on here but having trouble have given up on the picture it mounts on the three dimples on the firewall top left corner has wires going to it looked at a lot of engine compartments and don't see it

 

[oldhemiguy]

 

[72RoadRunnerGTX]

Control/thermal switch for NOx control system.

 

[aussiemark]

See where the wires lead to, could it be a regulator for an alternator?

 

[AUSTA]

View attachment 38217 View attachment 38217

yes as 72RoadRunnerGTX said Nox control the bottom fitting is for vacuum tube could have N95 on fender tag for emission control car

 

[oldhemiguy]

thank you guys for the help after the lead I was able to find it . It is for a clean air car

 

[moparleo]

On my 73 Challenger