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Time to upgrade your muffler? 4 State Trucks has you covered with a wide selection of Peterbilt 379 mufflers and DPF parts. Shop our custom, chrome, and aftermarket options in various styles. We have you covered with high-quality solutions that will fit your budget.

Peterbilt 379 DPF & Mufflers

Buy aftermarket DPF & Muffler parts for the Peterbilt 379 model. Our line of products features a wide variety of high-quality aftermarket DPF (Diesel Particulate Filter) and muffler components to enhance your truck's functionality and style. It's a reliable and cost-effective way to improve your exhaust system. Choose from stainless steel exhaust shields and heat shields to performance mufflers and DPF replacements, you'll find everything needed to keep your Peterbilt running at its best.