The 4 State Trucks Blog
9 Costly Peterbilt 379 Exhaust Stack Replacement Mistakes to Avoid
Although replacing exhaust stacks on a Peterbilt 379 is a bit easier than some other models, it can still be a time-consuming and tedious experience that can easily take up entire weekend.
The difference between a DIY semi-truck exhaust installation taking a few hours and a few weeks is just one piece of faulty hardware.
So, be prepared.
Here are the top mistakes to avoid when replacing exhaust parts on your Peterbilt 379.
#1. Buy Extra Exhaust Hardware Before Starting a Peterbilt 379 Exh
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3rd Jun 2026