The 4 State Trucks Blog

Bryan Martin. A Peterbilt 359. Over a decade of scars, stories, and soul. Some trucks come and go. Some trucks define an era. For Bryan Martin, the Rat Rod, a custom Peterbilt 359, wasn’t just a rig — it was a chapter of life that ran hard for more than a decade. A wide range of Peterbilt parts and accessories were used to craft this rugged, sleek build. It hauled, survived, evolved, and became a rolling extension of its owner. And like all great eras, it eventually came to an en …

A stylish semi truck fender is among the best way to personalize and cusotmize your big rig. But when it comes to choosing the right material, it comes down to a lot more than style and aesthetics. Fender Material Comparison (Pros, Cons, Best Use) Quick scan guide to choose the right material for your route, climate, and build style. Material Pros Cons Best Application Poly (Polymer) Best for abuse + winter Impact “Memory”: bounces back after hits Corrosion proof: n …

Fibertech truck parts, known for their Fibertech fenders, whale tales, and sleeper roof caps, deliver aerodynamic efficiency through deliberate curved designs and other exterior parts. Let’s dive into how these parts maximize sleeper airflow and how that translates into real-world savings on fuel and time. Sleeper airflow affects everything from driver comfort and HVAC efficiency to fuel economy. Fiberglass Material in Semi-Truck Parts: Why It’s Used Just like the sturdy, aerody …

Let’s do a quick breakdown of Mack trucks vs Peterbilt trucks. Mack is naturally the cheaper, more affordable truck to buy. Peterbilt models come at a premium price point, but they're also packed with a rich array of driver-friendly features and plenty of cab space. Pete trucks are also notorious for letting owners completely customize their base builds with thousands of aftermarket Peterbilt truck accessories and upgrades to choose from.  It makes sense. Peterbilt trucks are famous f …

Let’s break down how to maintain peak emissions performance and avoid excessive repairs. In this guide we’ll cover the various Diesel Exhaust Fluid (DEF) and Diesel Particulate Filter (DPF) products and their functions, from gaskets and clamps to slipcovers. DPF and DEF systems aren’t related in any way. But they’re both critical aftertreatment systems for toxic exhaust emissions on a big rig.  Diesel Particulate Filters: The History, The Controversy Before 2003, th …