Peterbilt 378 Exhaust

Make sure everyone sees your Peterbilt 378 semi truck coming down the road with custom and aftermarket exhaust parts from 4 State Trucks. Whether you're looking for mufflers, rain caps, chrome stacks and tops, or something else, we've got a great selection of high-quality aftermarket Peterbilt 378 exhaust parts that will give you what you need for your own unique big rig. Show off your personality with upgraded exhaust and chrome on your Peterbilt.