The 4 State Trucks Blog

If you’re thinking about upgrading your semi truck’s fuel tank for a larger gallon-size and more fuel storage capacity - or you’re just replacing an OEM diesel fuel tank with an aftermarket brand, there’s one thing you need to know: fuel tank measurements! Top Fuel Tank Specs to Consider Before Upgrading:  Type of Manifold  Old or New Style Tank  Diameter and Length  Rear or Front Fill  Inches From Filler Neck to Drain Point  Without the r …

Semi truck lug nut covers aren’t just useful in protecting your lug nut and wheel studs, but they’re a great way to achieve a more polished, cleaner look at a low-cost.  Here are some of the coolest-looking lug nut covers you can get for your commercial semi truck.  Steel Reflector Lug Nut Covers These are run-of-the-mill covers that feature a few different reflector colors at the tip. Amber, blue, and red are your choices. You can, of course, choose between a push-on styl …

Semi truck axle covers protect the exposed axle housing from dirt and road debris while offering some really awesome-looking styles. And unlike "bigger" aftermarket purchases, like bumpers or grilles, a new set of semi truck hub caps won't eat into your budget.  Here are 5 great-looking styles to choose from. But first, here are a few general buyer's tips to know.  Metal vs Chrome Plastic Axle Covers Here's the truth. Back in the day, chrome-polished plastic axle covers weren’t i …

Semi truck power inverters are critical for truckers who need more comfort, productivity, safety, and convenience on long-haul truck drives. Key Takeaways Size the inverter for total wattage, startup surge, battery capacity, and runtime. Use pure sine wave power for sensitive electronics. Large appliances often require a hardwired system. Follow cable, fuse, grounding, mounting, and ventilation requirements. Watch for shutdowns, heat, odors, or voltage warnings, and inspect the battery and wir …

Here's some visual data on the most commonly owned heavy duty semi truck models based upon three popular truck brands: Peterbilt, Kenworth, and Freightliner. DISCLAIMER: (as of 2025) this data is four years old and should be compared with more up-to-date metrics.  Key Takeaways Freightliner dominated the 2021 registration data, ranking first in 41 of 50 states. Peterbilt ranked second nationally, while Kenworth ranked third among the brands compared. Peterbilt or Kenworth led ownership in …