The 4 State Trucks Blog
Most Common Replacement Parts for Freightliner FL70
Freightliner FL70/FL80 Business Class trucks see a lot of wear and tear while running job sites. The parts that risk quick replacement are those that see the most pressure and stress, like the suspension, drivetrain, or HVAC system.
Here are the most common FL70 replacement parts drivers need, why they fail, and which symptoms to watch for before small problems turn into expensive downtime.
The Freightliner FL70 Truck Model Explained
The Freightliner FL70 is a medium-duty (Class 6-7) vocat
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9th Jun 2026
Factory Peterbilt 379 Exhaust Mufflers vs Straight Pipes
When it comes to Peterbilt 379 factory-style exhaust muffler setups versus performance straight pipe exhaust (no muffler), the choice comes down to style preference.
Here's what you'll learn:
The pros and cons of aftermarket Peterbilt 379 stacks with a straight pipe versus factory-style exhaust stacks with a muffler.
Keep in mind, if you want stay 100% DOT-compliant in 48/50 states, stick with the factory exhaust muffler setup for your Peterbilt 379. No modifications, no risk.
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5th Jun 2026
9 Costly Peterbilt 379 Exhaust Stack Replacement Mistakes to Avoid
Replacing exhaust stacks on a Peterbilt 379 is a bit easier than some other truck models, the installation process can still be time-consuming and tedious.
If you're an owner-operator installing new exhaust parts in your garage. Get ready.
Because a single faulty piece of hardware could be the difference between an over-the-weekend DIY-installation that takes a few hours or several weeks!
Looking to avoid all of that? This guide is here to help.
Here are the 9 most common
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3rd Jun 2026
How to Measure a Kenworth T880 Visor Before You Buy
Here's a quick reference guide on how to measure a Kenworth T880 visor.
To avoid ordering the wrong semi truck visor, you'll need to first know the truck's cab style, windshield shape, mounting bracket location, visor style, light options, and whether the visor replaces factory brackets or mounts differently.
Measuring T880 Drop Visor Size Guide by Cab Configuration
The Kenworth T880 has been in production since around 2014. Over the last 12 years, it has seen a few iterations, including the T8
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1st Jun 2026
T880 Exterior Upgrades for Highway Trucks
The Kenworth T880 (2013 - present) is a popular vocational truck with a set-back axle that is designed to handle heavy payloads and operate across rugged work sites whether as a dump truck or logging truck.
However, the T880 model can be transformed into a custom show-stopping highway hauler with nose-to-trail exterior upgrades that balance polished chrome with well-placed LED lighting upgrades.
Most T880 owners look for function over style, focusing on ergonomic tool boxes, non-slip step
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29th May 2026