Peterbilt 357/378 DPF & Mufflers: Get the best exhaust components for your Peterbilt semi truck. This product lineup features a wide selection of high-quality diesel particulate filters, mufflers, and exhaust accessories designed to fit Peterbilt 357 and 378 models. Upgrade your truck's performance, soundproofing, and emissions with reliable DPF and muffler replacements from top brands. Whether you need a stainless steel DPF, a high-flow muffler, or exhaust heat shields, you'll find the right parts to optimize your Peterbilt's exhaust system. Enhance your truck's power, efficiency, and overall aesthetics with the premium Peterbilt 357/378 DPF and muffler products in this product lineup.