Freightliner M2 Business Class DPF & Mufflers This product lineup offers a wide selection of premium-quality diesel particulate filters (DPFs) and mufflers designed specifically for Freightliner M2 trucks. Whether you're looking to replace a worn-out DPF or upgrade your exhaust system for better performance and sound, you'll find a variety of top-tier options from trusted brands like BESTfit. The DPFs in this product lineup are constructed from durable stainless steel to withstand the rigors of heavy-duty use, providing reliable emissions control and extended service life. The mufflers, meanwhile, come in a range of sizes and configurations to suit your specific truck model and preferences, from high-flow performance mufflers to quieter sound-dampening options. No matter your needs, you'll find the perfect DPF or muffler solution here to keep your Freightliner M2 running clean, efficient, and sounding great. Browse the selection and upgrade your truck with quality parts from the industry's leading manufacturers.