The 4 State Trucks Blog

Semi truck floor mats aren’t just a protective element against food or drink spills or stains brought in by mud and snow; they can add some style to your commercial vehicle.  Why Floor Mats Matter in a Commercial Trucks As a driver, you pretty much live in your truck. Food or drink messes are bound to happen at some point.  To preserve your interior, you should always have a durable mat installed. If not a mat, consider buying a ribbed and grooved semi-truck floor liner set inst …

When it comes to upgrading the chrome on your semi truck, the options are limitless.  If you're looking to add a bit more personalization to your rig than the traditional aftermarket upgrades of exhaust stacks, visors, and bumpers, consider tossing in a few chrome trim pieces and interior chrome accessories. Essential Exterior Chrome Accessories for Peterbilt Trucks Chrome Wheel Covers Chrome Lug Nut Covers Chrome Tire Valve Stem Covers Chrome Headlight Bezels & Housings Add some …

Ever wondered why your semi truck’s AC runs smoothly, or why it suddenly stops working? Your A/C receiver, drier, or accumulator is the unsung heroe of your commercial vehicle.  First off - Why maintain the upkeep of your air drier? If you can ensure that it works well, this part will serve as the filter and pressure valve to keep your truck’s AC system clean, well balanced, and safe.  Understanding the Role of AC Driers and Accumulators The semi truck’s receiver-dri …

Are you a commercial truck driver looking to customize your Peterbilt 389 truck with aftermarket accessories and parts, but don’t know where to start? This guide is here to help.  This model came out in 2006 and has been a hit with commercial drivers ever since - the latest iteration being the 2025 model year which launched 2 years prior.  Lauded as the “king of customizations” by Peterbilt inc., this model is designed to seamlessly incorporate an abundance of afterma …

When you’re driving a big rig, every part of your drivetrain matters—especially the clutch brake.  It may be a small, often overlooked component, but without it, your gear shifts from a standstill could get rough, loud, or downright damaging.  So, let’s break down what a semi truck clutch brake is, what it does, and how to keep it from wearing out too soon. What Is a Clutch Brake in a Semi Truck? A semi truck clutch brake is a circular disc made with a friction surfac …