Freightliner SD 108-122 Exhaust Parts

Give your Freightliner SD 108, SD 114, or SD 122 the high-performance exhaust setup it deserves. Whether you’re upgrading your rig for better performance or replacing worn components, our in-stock lineup has the aftermarket exhaust parts that work as hard as your truck does.

Enhance Exhaust Flow & Chrome Tip Styles

Your Freightliner Severe Duty (SD) truck is made to handle tough conditions—and your exhaust system needs to keep up. From DPFs and mufflers to elbows, clamps, and chrome stacks, every component here is built to maximize performance, reduce emissions, and hold up to long miles and rough routes. Here's what you can find: - DPFs & Mufflers:Control emissions and reduce engine noise - Exhaust Clamps, Piping & Elbows:Secure your system with precision - Chrome Stacks & Tips: Boost airflow and give your truck a bold look - Mounting Hardware: Keep everything locked in tight

Why Upgrade Your Semi Truck Exhaust System?

- Improve fuel efficiency with better exhaust flow - Reduce backpressure to extend engine life - Stay compliant with current emission standards - Boost performance and throttle response - Add style with custom chrome stacks and tips
From daily work trucks to fully customized show rigs, these Freightliner SD 108–122 exhaust parts are ready to get the job done. Add some power mods to your upgrade by throwing in Freightliner SD 108-122 engine performance parts. While under the hood, you can easily swap out Freightliner SD heater and AC components, from heater hoses to O-rings. Whether you’re replacing, repairing, or customizing—4 State Trucks has the parts to keep your SD series rig running strong and looking sharp.