Outfitting your Peterbilt 375/377 for the road ahead? Our selection of high-performance DPF and muffler options has you covered. Upgrade your exhaust system with rugged, aluminized steel mufflers and pipes from top brands like BESTfit, offering a perfect fit and improved sound and airflow. Enhance your truck's appearance with chrome mufflers or opt for quiet, custom mufflers that deliver a smooth, low-profile look. Whether you need a full replacement or just a quality muffler insert, we have the durable, easy-to-install parts to keep your Peterbilt running strong and looking great. Breathe new life into your 375 or 377 with our wide selection of high-quality DPF and muffler solutions built to withstand the demands of the road.