Peterbilt 379 Frame & Chassis

Your Peterbilt 379 frame is the backbone of your truck. It supports the weight of your cab, sleeper, cargo, and drivetrain while also absorbing the stress of every mile you drive. That's why choosing high-quality semi truck frame and chassis parts is critical to long-term performance, safety, and structural integrity. Whether you're replacing worn-out components or customizing your rig for a cleaner look and smoother ride, we ve got the aftermarket parts that get the job done right. Built for Strength. Designed to Last. We carry a full selection of Peterbilt 379 frame rails and structural components that hold up under pressure. Our parts are built to OEM specs or better, so you get reliable fit, solid support, and long-haul durability without the dealership markup. - Browse key structural upgrades like: - Reinforced peterbilt frame rails and frame crossmembers and covers - Torque rods & U-bolts for suspension strength and control - Shocks, leaf springs, and air springs and level valves for a smoother ride - Brake parts for reliable stopping power on every haul Air line boxes, frame stps, and frame nut covers for finishing details that add both form and function

Customize Your Commercial Truck Chassis

Want to boost curb appeal while keeping functionality top of mind? We also stock commercial truck chassis accessories like: - Chrome trim - Stylish hub caps - Fender flares - Utility and light bar add-ons Each aftermarket truck part is designed to install easily and perform reliably whether you're in the shop, in the yard, or on the road.

Why Quality Aftermarket Frame & Chassis Parts Matter

Our aftermarket Peterbilt 379 frame and chassis components are engineered for long-term reliability. They're cost-effective, built for easy maintenance, and backed by trusted names in the commercial truck parts industry. So whether you're rebuilding from the ground up or replacing individual parts, you can do it with confidence. Shop for online truck parts today and find the right Peterbilt 379 frame and chassis replacement parts to keep your rig strong, stable, and ready for the next run. Let your truck's foundation work as hard as you do.