Find reliable aftermarket upgrades and replacement components that are make-model specific, whether you need Kenwoth W900 truck parts or T680 replacement parts, we have your make/model-specific …

Explore thousands of accessories and semi truck parts made to fit your Freightliner truck. Our in-stock heavy-duty truck parts for Freightliner models offer a warranty-backed, reliable and incredibly …

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 …

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.

At 4 State Trucks, you can upgrade the style of your rig with semi truck rear fenders. We offer a range of options from top brands like Hogebuilt, Merritt, and Minimizer, as well as budget-friendly choices …

Shop our clearance sale at 4 State Trucks for unparalleled savings on essential semi-truck parts! It's the perfect opportunity for truck owners to upgrade or maintain their fleet while saving.

We provide a comprehensive range of semi truck bumpers that are crafted from semi aluminum materials, robust steel, and eye-catching chrome, tailored for popular models like the Freightliner …

We've got you covered with a great selection of semi-truck lighting products. Whether you need back-up lights, marker clearance lights, or even warning strobes, 4 State Trucks has you set.

Ready to shop for our newest semi truck product inventory to date? Check out our new semi truck products and tools!

Browse through half-tandem truck fenders with various widths and gauge thicknesses, finishes, and style designs to perfectly customize your Class 8 truck. Filter for your make/model, whether it’s a …