Parts-TuningPlastic Sideskirt for the Peterbilt 579 October 27, 2019October 22, 2019 - Leave a Comment Works on duty cabin, any chassis. Also adds basic sideskirt for the 4×2 chassis if you had problems not showing any. Works on 1.35 – 1.35 Credits: RightLaneGaming Download mod File File size sideskirts_579 3 MB Share mod: