What is the best exhaust for 5.9 Cummins? Look no further; here it is. We’ve found and reviewed the top 5 models for you.
Cummins 5.9L diesel engine is among the most popular options out there for trucks. It consists of 24 valves and can deliver 180-215 HP in the 12v variant.
It would help if you had high-quality exhaust to ensure the engine continued to work well and created no noises. However, there are many options, so it can often be challenging to pick the right one.
To help you in this regard, we have picked some of the best exhausts for 5.9 Cummins.
Let’s have a look:
Best Exhaust for 5.9 Cummins: Top 3 Models
| Image | Model | Price |
|---|---|---|
| BD Diesel Performance 1045987 (Top Pick) | Check Price |
 | Dorman 674-602 | Check Price |
 | APDTY 785713 | Check Price |
1. BD Diesel Performance 1045987 (Editor’s Choice)
It is a durable and budget-friendly option. The beast is fabricated to maximize torque and HP across the RPM range. It improves throttle response and fuel economy.
Your vehicle’s performance will be boosted with the installation of this exhaust system. The exhaust surely turns heads due to its aggressive, classic sound.
Precise engineering, direct fit, and hassle-free installation cater to the customer’s requirements, and these features make it one of the best exhausts for 5.9 Cummins.
Features
A Perfect Upgrade
It is a top-notch product and has excellent quality control. This is a user-friendly brand, and thus, you do not require any additional modifications for installing this beauty. This product is an essential upgrade for better vehicle functionality.
Increased Power
The product enhances airflow making the engine more efficient. It features a fully divided pulse design. The system is designed to unlatch the true potential of your vehicle’s engine. You can experience enhanced fuel economy once this exhaust is installed. It sounds superb and has impressive looks.
Minimized Back Pressure
It is designed to tolerate vibrations and high temperatures. Moreover, this assists in keeping the gas temperature low, resulting in greater efficiency. It maximizes airflow, and backpressure is also minimized.
Quick Installation
It fits the vehicle easily, and thus, you do not have to face any problem installing. Installing this product does not need any special tool. This well-manufactured unit is quick to install.
The unrestricted airflow and enhanced volume efficiency make it a popular choice. In addition, manufacturers have designed it in such a way that you can install it easily. Thus, it uses a simple bolt-on procedure on factory mounting locations.
Pros
- Super durable exhaust system
- Improves engine performance
- Superior built
- Strong performance
- Enhance torque and horsepower
Cons
- Mounting bolts clearance are too tight
BD’s exhaust system is simple to install and built with excellent quality materials. It is made for improving your vehicle’s functionality and increases fuel economy as well as power.
2. Dorman 674-602
This exhaust is precision-engineered and designed with quality control. The beast with beauty matches the performance and has a great fit similar to the original components of vehicles. For a hassle-free installation, it comes with the required hardware.
The superior quality metal construction offers protection against cracks or twists. The strong performance of this product impresses people all across the globe.
Features
Superior Quality
It is made of high-quality, durable components. The high-end construction quality makes it resistant to cracks, warps, and leakage. You will love this product as it is a long-lasting performer.
Perfect Replacement
It is manufactured keenly, and precision engineering matches the function and fit of factory systems on vehicles, making it a perfect aftermarket product for your truck.
No Additional Hardware Required
For simple and quick installation, all required hardware is included in the kit.
Top-Notch Design
The product manufacturer is a leader when it comes to exhaust. Its design is reliable and offers the best that you can expect from costly manifolds. In addition, the design is such that it fits your vehicle’s make and model exactly.
Leak-Proof
Most manifolds can crack, and leakage happens because of wear out; the engine can be noisy, affecting the vehicle’s performance. Intense heat from crack severely affects other parts too. But with Dorman 674-602, you do not have to worry about all these as its leaks resistant design ensures long-lasting performance.
Value for Money
When it comes to money, this product is an excellent choice as it is budget-friendly. In addition, this is good quality and popular exhaust for 5.9 Cummins and adds convenience and efficiency.
Pros
- Improved power with noise reduction
- The well-built body is durable
- Improved flow adds to the engine life
- High-end construction makes the product long-lasting
- Affordable cost makes it a popular choice
- High-end functionality
Cons
- The gasket is not included, so you need to purchase it extra
This high-performing brand guarantees to meet customer requirements by offering a wide range of customized exhaust systems. This product is an essential upgrade for better vehicle functionality. Choosing this system is one of the right decisions you can make for your beast.
3. APDTY 785713
It’s time to enhance the torque and HP of your vehicle’s engine with this superior quality system. If you are interested in a quality exhaust system at an affordable cost, this is for you.
Throttle response and fuel economy are improved with unrestricted airflow. In addition, it comes with all the required hardware that you need for installation.
Features
Quick to Install
It is quick to install as the kit includes all the required hardware. You only need a jack stand for lifting your vehicle and installing this system.
Robust Construction Quality
It is manufactured with high-grade materials that make it long-lasting. This product gives you worry-free life so you can experience your engine’s true potential, making it a good choice for your vehicle.
Good Torque and HP
This exhaust system will upgrade the HP and torque of your engine, and you will get greater performance.
Good Airflow
Airflow is enhanced because of the high-end design. Moreover, the temperature is also minimized.
Impeccable Quality
The product manufacturers use superior quality materials to make them durable. In addition, modern engineering methods are used in its construction.
Pros
- Promised OE quality and functionality
- Ideal for modern vehicles
- Guaranteed improved power
- Designed especially for high caliber performance
- High-quality construction materials are used
Cons
- Manifold does include new bolts
If you are keen on OEM vehicle parts, APDTY is one of the best brands you can select without hesitation. The brand has been offering quality components. So when you are looking for high-quality exhausts, this is the one you can consider for your vehicle.
4. aFe 49-02002 ATLAS Aluminized Steel Turbo-Back Exhaust System
If you want nothing but the best exhaust for your 5.9 L Cummins engine, then look no further; aFe 49-02002 has you covered.
It is built with strong aluminum steel and contains 4-inch broad tubings that give it strength.
Features
- Enhanced Horsepower And Torque: aFe Atlas exhaust system is made using Mandrel bent 4-inch aluminized tubing. Thanks to this material, the exhaust can offer excellent horsepower and torque.
- Leak-Free Seal: The exhaust incorporates OE-styled band clamps that provide a 360-degree sealing area. Thus, expect no leaks. However, it will work smoothly for an extended period.
- Easier Installation: This exhaust is easy to install thanks to the bayonet style hangers and 2-piece tailpipe.
- Muffler: It comes with a 12-inch muffler that ensures you do not have to bear loud engine sound. It suppresses the noise and makes it tolerable.
Pros
- Smooth installation.
- Increases about 10 HP and 20 pounds torque approximately.
- Leakproof.
- Strong construction meant to last for years.
Cons
- It gets a bit loud when acceleration is hard.
This is a premium-level exhaust with a top-notch build. It is known to improve HP and torque. In our opinion, it’s the best 4-inch exhaust for 5.9 Cummins available on the market right now.
5. Diamond Eye K5322A Turbo Back Exhaust Kit
This turbo back type exhaust system is designed to offer top-notch performance. It will decrease exhaust gas temperatures and maximize flow to a great deal.
Features
- Free-Flowing: This exhaust system is made up of CNC mandrel bending machine that keeps the engine in good shape. Plus, it is also known to take care of emissions.
- Easy Installation: Since it is mounted directly to a turbo unit, installation becomes too easy. All you need to do is use the jack stand to lift the vehicle and weld connections.
- Superior Sound: It has a 5” diameter; hence it is not the quietest option out there. You will not hear much noise when the windows are closed. You can enjoy music and have a conversation without any trouble. However, keeping the windows down may not be a good choice since it will cause noise.
- Strong Construction: It is manufactured using 16 gauge aluminized steel that lasts for years.
Pros
- It comes with clamps and hangers to make installation easier.
- Works best in 2003-2004 Dodge Ram.
- Durable body.
- Improves flow.
Cons
- The hangar is a bit tricky.
This exhaust system will fit easily in 2500/3500 Cummins 5.9L engines. It is known to boost performance. However, it is not the quietest option out there.
6. MVP Auto Parts Aluminized Steel Turbo-Back Exhaust System Kit
This beauty is designed to improve engine performance by reducing emissions. Plus, it can also keep the engine well maintained and add to its life.
Features
- Mandrel Bent Pipe: This exhaust system is constructed using the CNC mandrel bend pipe that reduces band degree angles.
- Good Flow: This one has a straight pipe design that ensures a smooth and consistent emissions flow. Moreover, it also helps to keep the exhaust gas temperatures to a minimum.
- Easy Installation: This exhaust is easy to install as it can be mounted directly to a turbo unit. You can even do the job on your own, removing the need to seek professional help. You will need a jack stand to lift the vehicle and weld the connections.
- Good HP And Torque: This turbo-back exhaust system can increase both torque and horsepower of the engine.
Pros
- It is made up of 14 gauge aluminized steel.
- Incorporates simple bolt-on hangars.
- Super durable exhaust.
- Emission efficiency.
Cons
- No muffler included.
If you want a decent exhaust for your 5.9L Cummins engine, then consider this option. It is quiet thanks to a muffler and can enhance performance as well.
7. MBRP S6108P Single Side Cat-Back Exhaust System
MBRP S6108P is an easy bolt-on exhaust system that is affordable and also quite durable. In addition, this exhaust comes with a small muffler and is known to be quiet.
Features
- Increased Airflow: This exhaust system incorporates mandrel fully bent tubings that result in minimum bending and increased airflow.
- Easier To Install: The exhaust is specifically tuned to fit the vehicle; hence you will have no trouble doing the job. It does not even require welding. The installation requires no significant tools either.
- Muffler: It comes with an aluminized muffler that works to suppress the engine’s sound and make the driving experience peaceful.
Pros
- Improves gas mileage by 1-2 mpg.
- Satin finish on the body goes a long way.
- 1-year warranty.
- Boost horsepower and torque.
Cons
- The tip is not included.
This is a durable exhaust capable of improving the bottom line by making the fuel run for longer. Plus, it has a warranty as well.
8. Diamond Eye 04.5-’07 Dodge Ram Cummins 5.9L Diesel 2500/3500
This exhaust system is for users who want to enjoy complete silence. It’s among the best when it comes to suppressing engine noise. Moreover, it is quite durable as well.
Features
- Strong Build: It is constructed using 4” aluminized steel that gives it superior durability.
- Easy Installation: Installing it is a piece of cake. You can mount it directly to the turbo unit.
- Minimizes Band Degree Angles: This exhaust can reduce the band degree angles like a pro, thanks to the broad diameter.
Pros
- Good at reducing noise.
- Easy to install.
- Very durable.
- It fits 2004 to 2007 Dodge Ram.
Cons
- You may need to trip the tailpipe extension.
It might not be the best exhaust on the list, but it is durable and improves airflow. The best part is that it can suppress as it comes with a muffler.
How to Pick the Best Exhaust for 5.9 Cummins
Make sure to keep these factors in mind so you can get the best exhaust system for your 5.9L Cummins engine:
- Muffler: If you want a silent driving experience, consider getting an exhaust that comes with a muffler. The job of the muffler is to suppress the engine noise.
- Airflow: Exhausts that can enhance airflow are good at making the engine more efficient. Look for exhausts with Mandrel-bent tubing as they offer better airflow.
- Durability: Choose an exhaust that is made up of at least 14-16 gauge aluminized steel. They tend to last longer.
Best Exhaust For 5.9L Cummins: Final Thoughts
All the exhausts mentioned above are great, but we’d go with the BD Diesel Performance 1045987 exhaust if we had to pick one. It enhances horsepower and torque.
It’s the best exhaust for 5.9 Cummins.