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

Sep 9, 2025 · Ready to transform your rig into a hydraulic powerhouse? A semi truck wetline kit can do the trick. One of these will turn your truck from a normal highway hauler into a workhorse capable of …

Improve performance and reliability with semi truck exhaust parts. Upgrade your truck’s exhaust system today— and enjoy fast, reliable shipping.

High-Octane Semi-Truck Racing event promises side-by-side racing, truck displays, vendors, live music, kid zone & camping. The event will showcase loaded bobtail, and freestyle drag racing attracting …

Shop heavy-duty semi truck front bumpers built for strength, style, and road protection. Find chrome and steel bumpers designed to fit Class 8 trucks and stand out.

That’s why we offer some of the best semi truck seats and accessories in the industry—built for comfort, durability, and long-haul performance. Whether you drive a Peterbilt, Kenworth, Freightliner, or …

Universal semi-truck seats are designed to fit most Class 6, 7, and 8 trucks including Freightliner, Peterbilt, Kenworth, Volvo, Mack, and International models from 1990 to present.

Universal semi-truck horns are designed to fit most Class 8 trucks including Peterbilt, Kenworth, Freightliner, Volvo, Mack, and International models from 1990 to present.

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 …