Peterbilt 375/377 Exhaust Parts

Looking to get more out of your Peterbilt 375 or 377? Upgrading your semi truck exhaust system is a smart way to boost performance and add that custom big rig style. Our aftermarket exhaust parts help your Peterbilt 375/377 diesel engine perform cooler, cleaner, and more efficiently—mile after mile.

Why Upgrade Your 375/377 Semi Truck Exhaust System?

Your truck’s exhaust system does more than blow smoke. It directs heat and gases safely away from your engine, cuts down on emissions, and reduces noise. A healthy exhaust setup improves fuel economy, protects vital components, and keeps your truck compliant with emissions standards. Better airflow = better power. It's pretty much as simple as that.

Essential Components for a Stronger Exhaust System

Here’s what you’ll find in our aftermarket exhaust lineup: - Exhaust Manifolds: Collect gases from the engine’s cylinders and push them through the system. - Turbochargers: Use exhaust pressure to boost engine power. - Exhaust Piping & Elbows: Route gases from the engine to the back of your rig. - DOC & DPF Units: Help clean harmful particles and emissions from the exhaust. - Mufflers: Quiet the ride while keeping flow strong. - Chrome Stacks: Send cleaned exhaust up and out while making your rig stand out. These parts don’t just perform—they add serious style.

Shop Online for Aftermarket Replacements that Work

Whether you’re hauling coast-to-coast or running local jobs, your exhaust system takes a beating. That’s why our parts are built with high-quality materials like stainless steel, aluminized steel, and corrosion-resistant finishes. Choose from OEM-style replacements or go bold with custom chrome stacks and aftermarket mufflers that’ll turn heads.
From clamps, hangers, and Y-pipes to full exhaust kits, every part is designed to fit your Peterbilt 375 or 377 without a hassle. Installation is straightforward, and performance benefits are immediate: - Improve exhaust flow -Lower EGTs -Boost torque and fuel economy -Cut down on backpressure -Reduce engine wear You’ll also get that classic diesel sound that tells the road you're serious. If you're interested in a comprehensive performance tune-up, consider adding some better engine cooling components for the Peterbilt 375/377, or enhance the Pete 375/377 AC system for stronger under-the-hood airflow.