The Mack CH/CHN/CHU drivetrain lineup has all the essentials to keep your truck rolling strong. From brake camshafts and universal joints to transmission mounts and differential pinion nuts, it s your go-to for replacements and maintenance. Built tough and made to fit Mack models perfectly, these parts deliver OEM-quality performance you can count on. Whether it s routine upkeep or a specific fix, this lineup has what you need to keep your rig running smooth.