4 State Trucks carries the best new semi truck parts for Peterbilt, Kenworth, Freightliner, International, and more.

No matter your truck make or model, you’ll find trusted aftermarket options here. Keep your air brake system tight and your trailer air lines flowing freely with reliable parts that won’t let you down.

Your semi truck’s exhaust system does more than just move fumes out of the engine—it plays a huge role in performance, emissions control, and style. That’s why we carry a massive selection of heavy …

Will a CSM bumper fit my specific truck model and year? CSM bumpers are designed for specific truck models and years. Most commonly, they fit Peterbilt 379 (1987-2007), Peterbilt 389 (2008-present), …

Most of our semi truck cab lights are made for universal fitment. That means they work with just about any Class 8 truck—Freightliner, Kenworth, Peterbilt, Western Star, and more.

4 State Trucks offers a top-notch selection of semi-truck tool boxes to keep your tools safe and organized on the road. Explore durable aluminum, Minimizer, and plastic options for the perfect fit for …

All our semi truck custom shifters are designed for daily use on the road. They fit most popular rigs—Peterbilt, Kenworth, Freightliner, and more. Whether you're hauling heavy or just want the best …

Looking for reliable semi-truck tool boxes? At 4 State Trucks, we offer everything from 60-inch and step tool boxes to underbody and in-frame options, plus replacement parts like hinges, locks and handles.

Find a range of semi truck bumpers and accessories at 4 State Trucks. From sleek bumper bolts and handy guides to stylish center rear light bars and sturdy rear T bumpers, we have everything you need.

From fleet workhorses to fully customized show trucks, we’ve got the truck lighting you need to elevate your Volvo. 4 State Trucks is the trusted source for quality lighting parts that blend safety, durability, …