Semi-Truck Exhaust Parts
Shop Heavy Duty Exhaust Replacement Parts
Your semi truck’s exhaust system does more than just move fumes out of the engine—it plays a huge role in performance, emissions control, and style. That’s why we carry a massive selection of heavy-duty exhaust parts built to handle the toughest jobs on the road. Whether you have a Peterbilt, Freightliner, Volvo, or Kenworth, we have replacement components to get your exhaust system back in running order. Choose from polished chrome stacks to diesel particulate filter components, every piece is designed to help improve your exhaust flow, reduce emissions, and bolster your truck’s look.Exhaust Pipes, Mufflers, Clamps & Fittings
Our online inventory includes: - Exhaust Stacks carry the exhaust up and away. They’re the most visible part and give your truck its look and sound. - Mufflers cut down noise and manage backpressure so your engine breathes right. Too much backpressure, and you lose horsepower. Too little, and the engine can struggle. - Exhaust Clamps lock pipes, stacks, and mufflers together. A loose clamp means leaks, rattles, and hot fumes under the cab. - Resonators fine-tune the sound. They don’t silence like a muffler but smooth out that sharp bark. - Exhaust Heat Shields protect paint, wiring, and fuel tanks from high exhaust temps. Without them, you risk blistered paint or worse. - Exhaust Brackets keep everything stable. They take the weight of those heavy chrome stacks and stop vibration from cracking your pipes. - Diesel Oxidation Catalysts (DOCs) and Diesel Particulate Filters (DPFs) are what keep your emissions system compliant. All of our commercial exhaust parts feature quick shipping, a workmanship warranty, and expert customer support. Whether you’re building an exhaust system from scratch or adding a fuel-efficient truck engine parts upgrade for your semi truck fuel system.Exhaust Stacks & Their Impact
Chrome stacks aren’t just for looks; they determine your truck’s sound profile based on diameter and shape. Straight Cut: clean, simple look for a sharp and aggressive tone. Miter Cut: sharply angled at the top to push fumes back and away. Bull Cut: wide, flared tips for a deep, throaty rumbling tone. West Coast Style Cut: bends exhaust flow backwards.Upgrade Your Entire Exhaust System
From turbo connections to tall chrome stacks, we carry the semi truck exhaust parts to help your whole system perform better on the road. If you’re looking for better engine performance, fewer emissions, or a polished, custom look—we’ve got you covered.Frequently Asked Questions About Semi-Truck Exhaust Parts
What size exhaust pipes and stacks do I need for my specific truck model?
The correct exhaust size depends on your truck's make, model, and engine specifications. Most Class 8 trucks use 5-inch diameter exhaust systems, but some require 4-inch or 6-inch setups. Check your existing exhaust diameter where it exits the turbo or DPF. For Peterbilt 379/389 models, 5-inch is standard. Kenworth W900 typically uses 5-inch, while some Volvo VNL models may use 4-inch. Always measure your current system or consult your truck's service manual to ensure proper fitment and avoid performance issues.
Will aftermarket exhaust parts void my truck's warranty or affect emissions compliance?
Installing aftermarket exhaust components behind the DPF/SCR system (such as stacks, elbows, and mufflers) will not void your warranty or affect emissions compliance. However, any modifications before the emissions equipment, including DPF deletes or EGR bypasses, are illegal for on-highway use and will void warranties. Stick to EPA-compliant parts that work with your existing emissions systems. Most chrome stacks, exhaust tips, and mufflers are completely legal as they don't alter emission controls.
How difficult is it to install exhaust stacks and elbows myself?
Basic exhaust stack installation typically takes 2-4 hours with standard tools. You'll need band clamps, and basic hand tools. The main challenges include proper alignment to avoid cab contact, securing heavy chrome stacks (some weigh 50+ pounds), and ensuring leak-free connections. Many drivers successfully complete this as a weekend project. However, if you need to modify exhaust routing or install new brackets, professional installation may be worth the investment to prevent exhaust leaks or damage.
What's the difference between 304 and 409 stainless steel exhaust parts?
304 stainless steel contains more chromium and nickel, providing superior corrosion resistance and maintaining its shine longer, but costs 30-40% more. 409 stainless is magnetic, may develop surface rust over time, but offers good durability at a lower price point. For trucks in northern states using road salt, 304 is recommended for longevity. Southern drivers or those wanting the best value often choose 409. Both grades handle exhaust temperatures well, so the choice mainly affects appearance longevity and corrosion resistance rather than performance.
Why do my chrome exhaust stacks keep turning blue or gold?
Bluing occurs when chrome is exposed to exhaust temperatures exceeding 800-900 degrees Fahrenheit, which is common during heavy loads or extended idling. This is cosmetic only and doesn't affect function. To minimize bluing, ensure proper exhaust flow without restrictions, avoid excessive idling, and consider heat shields or wrapped stacks. Some drivers prefer the blued look as it shows the truck is working hard. If appearance is critical, polished stainless steel stacks resist discoloration better than chrome-plated ones, though they cost more initially.
