Looking to upgrade or replace your worn-out Peterbilt 379 muffler or DPF system? We ve got you covered. This extensive collection of aftermarket parts is built specifically for the iconic Peterbilt 379 truck. Whether you're chasing better engine performance, cutting down on backpressure, or just replacing a worn-out unit, you'll find the right fit components here. Inside this product lineup you can shop for: - Aftermarket mufflers for the Peterbilt 379 semi truck year - DPF muffler units and replacement filters to remove harmful particulate matter from exhaust gases - Heat shields, stainless steel covers, and performance parts - Heavy duty mufflers and commercial truck muffler setups that dampen and absorb noise created by the engine's exhaust Every aftermarket Peterbilt 379 muffler we offer is designed for a clean fit and long life. From OEM-alternative heavy equipment mufflers to full DPF systems, these parts are made to handle the heat, pressure, and miles your truck puts in every day. Need something that meets emissions regulations but doesn t kill your flow? Our heavy duty truck muffler options help you stay road-legal while improving exhaust performance alongside your elbow components. So, whether you're fixing a problem or customizing your rig to achieve a high-performance exhaust system, you can start here and shop with confidence. Quality mufflers and deisel particulate filters can deliver a more comfortable dirving experience for an aging semi truck model like the Pete 379. And new stainless steel chrome stack tops can top off your exhaust system overhaul.