Discover the power and performance of Peterbilt 567/579 DPF & Mufflers. This comprehensive product line features a wide range of durable, high-flow mufflers and diesel particulate filters (DPFs) designed specifically for Peterbilt semi-trucks. From aluminized steel mufflers with 4-6 inch inlets/outlets to stainless steel DPFs for Cummins ISX engines, these products deliver exceptional exhaust flow and reduced backpressure for maximum efficiency. Upgrade your Peterbilt with these top-quality replacement parts and experience the difference in power, acceleration, and fuel economy. Whether you need a quiet performance muffler or a rugged DPF, this product line has the perfect solution to keep your Peterbilt running at its best.