Your Peterbilt 387’s drivetrain is what keeps power flowing from the engine to the wheels. When it’s working right, your truck pulls strong, shifts smooth, and gets the job done. When it’s not—it’s time for upgrades or replacements. We’ve got the aftermarket drivetrain parts you need to stay road-ready and rolling strong.

Get More Power Out of Your Rig

Here are some of the drivetrain parts you can often find in stock: - Camshafts: Keep your Peterbilt 387 engine breathing right and running smooth - Universal joints (U-joints): Allow the driveshaft to flex and spin without binding - Yokes and bearings: Secure connections and reduce vibration - Differential components: Manage power between your drive axles, especially in turns or rough conditions - Seals, gaskets, and repair kits: Keep oil in and contaminants out Our lineup of brake parts and accessories aren’t just replacements, they’re upgrades. Built tough to handle daily stress, long hauls, and big torque. Perfect for routine maintenance, major repairs, or full-on rebuilds. You can pair your drivetrain components with sturdier Peterbilt 387 frame and chassis upgrades for a higher quality driving experience. Whether you're chasing smoother rides, better fuel efficiency, or fewer breakdowns, quality drivetrain parts make a big difference