Give your Freightliner Columbia 112 or 120 the upgrade it deserves with aftermarket exhaust parts built for performance, style, and long-haul durability. Whether youâre fixing a worn-out system or customizing your ride with chrome stacks, this collection is loaded with high-quality gear to get the job done right.
Why Upgrade Your Columbia 112/120 Exhaust System?
- Improve airflow for better engine efficiency
- Boost fuel economy by reducing backpressure
- Meet emissions standards with reliable DPFs and mufflers
- Add some shine with polished chrome stacks and tops
- Cut noise and protect performance with premium mufflers
Every part is built to handle the demands of heavy-duty driving. You get long-lasting durability, easy installation, and a clean, professional look for your rig.
Here's what you can start upgrading.
- Chrome Exhaust Stacks & Tips: Turn heads with custom styles and finishes
- DPF Systems: Control soot and stay compliant
- Mufflers: Quiet the rumble while maintaining exhaust flow
- Elbows & Piping: Route exhaust gases efficiently and safely
- Clamps, Brackets & Mounting Hardware: Keep everything secure and rattle-free
- Exhaust Kits: All-in-one solutions for fast upgrades or replacements
Whether you're hauling freight across the country or keeping things local, your Freightliner Columbia's exhaust system is key to smooth operation and style. Add some power modifications with
Freightliner Columbia 112/120 engine performance upgrades and swap out any worn-out
Columbia heater and AC parts while youâre under the hood. Shop with confidenceâthese aftermarket exhaust parts are built to fit right, last long, and keep your big rig looking sharp and running clean.
Frequently Asked Questions About Freightliner Columbia 112/120 Exhaust Parts
Will these exhaust parts fit my specific Columbia model year?
Our exhaust parts are designed to fit Freightliner Columbia 112 and 120 models from 2001-2017. However, there are variations between early models (2001-2010) and later models (2011-2017) due to emissions changes. Always check the product description for specific year ranges, and note whether your truck has a DPF (Diesel Particulate Filter) system, as this affects compatibility. When in doubt, have your OEM ready when ordering or contact us with your truck's serial number for verification.
What's the difference between aluminized and chrome exhaust stacks?
Aluminized steel stacks are coated with an aluminum-silicon alloy that provides good corrosion resistance at a lower price point, typically lasting 3-5 years depending on conditions. Chrome stacks feature a mirror finish and superior corrosion resistance, often lasting 5-10 years with proper care. Chrome requires more maintenance to keep its shine but offers the best appearance. For trucks in harsh winter climates with heavy road salt exposure, chrome is worth the extra investment.
Do I need special tools or brackets to install these exhaust components?
Most exhaust stack installations require basic hand tools including wrenches, a socket set, and potentially a sawzall for removing old components. Stack clamps and mounting brackets are typically sold separately unless specified in the product listing. For flex pipes and mufflers, you'll need proper exhaust clamps (usually 5-inch for Columbia models). Professional installation typically takes 2-3 hours. Always use high-temperature anti-seize on connections to make future service easier.
How do I know what diameter exhaust parts I need?
Most Columbia 112/120 models use 5-inch diameter exhaust systems from the factory. Measure your current exhaust pipe outer diameter to confirm - the measurement should be exactly 5 inches. Some aftermarket setups may have 6-inch or 7-inch systems. Never assume based on appearance alone. If upgrading to a larger diameter, ensure your muffler, flex pipe, and stacks all match, and be aware that increasing diameter may affect back pressure and require ECM tuning on newer models.
Why are my exhaust stacks turning blue or discoloring?
Blue or gold discoloration on exhaust components indicates excessive heat, typically from engine problems rather than defective parts. Common causes include over-fueling, EGR issues, turbocharger problems, or restricted DPF systems. This discoloration appears when exhaust temperatures exceed 800-900 degrees Fahrenheit consistently. While the discoloration is cosmetic and doesn't affect function, it signals you should have your engine diagnosed. Heat shields or wrap can help protect visible portions of chrome stacks from discoloration.
Freightliner Columbia 112/120 Chrome Stacks & Tops
Freightliner Columbia 112/120 Clamp-Bracket-Mount
Freightliner Columbia 112/120 DPF & Mufflers
Freightliner Columbia Elbows, Piping & Comp.
