Cummins ISX straight pipe engine pack

Now updated to 1.58

Last Update on Feb 10, 2026

Bring modern power and refinement to your fleet with the Cummins ISX/X sound mod for American Truck Simulator . Captured through precise multipoint synchronous recording , this package delivers the clean, authoritative tone that defines Cummins’ latest heavy-duty engines — from a smooth idle to a commanding pull at full throttle.

Beyond audio, the mod recreates the driving character of these engines with unmatched detail: