Mystery air valve ?

[Yauchout]

Does anyone have any idea with this? Air valve is behind the battery box on my international Lonestar it is leaking right where that screw is in the picture looks a bit like an adjustment screw. I would like to replace this valve but I have no idea what it is

[marek4792]

It almost looks like some sort of abs module like the ones you'd see for steer axle brakes on each side? Maybe for a similar purpose?

[Yauchout]

(11-02-2024 )marek4792 Wrote:  It almost looks like some sort of abs module like the ones you'd see for steer axle brakes on each side? Maybe for a similar purpose?

My truck does have the Bendix ABS ESP roll stability system but that valve isn't listed anywhere in any of the diagrams I can find and it doesn't look anything like any of the other 6 ABS valves on the truck

[Yauchout]

I thought I would update this. It appears to be the at-3 traction control valve. It looks like they updated the solenoid at some point and it's square now instead of round