The 4 State Trucks Blog

You're driving at 70 mph, but your dash says 0. Each shift jerks you forward and the cruise control won't stay on. Sound familiar? It's your Peterbilt speed sensor that's breaking down.  Buy a low-cost speed sensor replacement ahead of time and store it for a rainy day. It can prevent a lot of costly downtime. We keep a massive supply of heavy-duty replacement parts for Peterbilt in stock and ready to ship.  What is a Speed Sensor in a Semi Truck? Basically, the speed sensor monitors …

Decorative light panels are an outstanding way to start personalizing your truck. Air breather panels offer tremendous visual appeal and can elevate your big rig's nighttime appearance. There are five main styles of air cleaner panels you can buy: Vortox, Nelson, Donaldson, Donaldson Premium, and Donaldson Preferred Fit. Limited Time Deal Find air cleaner assemblies, filters, and cleaning kits on sale. SHOP AIR CLEANERS The Types of Air Cleaners for Semi Trucks Explained You can even get cu …

If there's one thing that a truck driver needs it's more storage space. Buying the right heavy-duty commercial truck storage boxes is one of the most useful purchases you can make. Here are some of the best aftermarket semi truck toolboxes to improve your storage capacity while adding style to your big rig.  In this guide, we'll cover the different brands, materials, and design options you can choose from.  Heavy Duty Savings! Find Merritt step & tool boxes to accentuate your bi …

Ready to transform your rig into a hydraulic powerhouse? A semi-truck wet line kit can do the trick. One of these will turn your truck from a normal highway hauler into a workhorse capable of handling tasks in agriculture, construction, bulk hauling, or other industries. For those already running dump trailers, walking floors, or tankers, a precision-installed wetline kit is the difference between seamless performance and thousands of dollars in avoidable repair costs. In this post, we'll break …

When it comes to your semi truck’s power system, batteries are the lifeline for nearly any application, from your lighting to your sleeper loads (interior appliances). In this brief guide, we’ll cover how to swap out and maintain your commercial truck’s batteries, as well as what battery cover boxes you should buy for maximum protection. Here’s the fastest way: disconnect the negative cables first, remove the old batteries, clean off the connections, and install a new Gro …