The Dodge Cummins 3rd Gen is one of the most popular diesel engines on the market. It’s known for its reliability and durability, making it perfect for heavy-duty applications. If you’re looking for a powerful engine that can handle whatever you throw at it, the Dodge Cummins 3rd Gen is a great option.
The term “Third Generation Dodge Cummins” refers to Dodge Diesel vehicles manufactured between 2003 and 2009 with the model years ranging from 2003 to 2009. This generation of Dodge Cummins diesel trucks is popular because it allows you to acquire a 5.9L 24v Cummins engine while still having more up-to-date technology and larger cabins.
The third-generation Cummins was one of its most appealing qualities, along with the new Mega Cab design. The 6.7L Cummins engine became available later in this generation, and it is still utilized in today’s 4th and 5th generation Ram Diesel trucks.
3rd Generation 5.9L Cummins Performance Specs
When the third generation Cummins was introduced in 2003, it leapfrogged over Dodge Cummins vehicles from 2002 by a wide margin. The 2003 3rd generation Cummins engines produce 305 horsepower and 555 lb-ft of torque, which is 60 horsepower and 50 lb-ft more than the high output model from 2002.
Other improvements in the third generation include greater power and torque numbers. When compared to previous years, 3rd Gen Dodge Cummins trucks are considerably quieter and cleaner.
High-Pressure Common-Rail Engine
The third-generation Cummins was a watershed moment for Ram trucks and Cummins. The high-pressure common-rail injection is utilized, allowing the vehicles to be more efficient than in previous generations. The dependable CP3 injection pump gets its fuel supply from an electronic lift pump.
It’s controlled by a high-pressure fuel pump, which pressurizes the fuel before it is sent to the fuel rail. The gasoline is then distributed by the fuel rail as needed by the injectors. This engineering breakthrough allowed Cummins to keep their vehicles EGR-free for a few extra years until they introduced the more efficient 6.7L Cummins in 2007.
5.9L 24V Fuel Upgrades
The new common-rail fuel delivery system necessitated a number of modifications to the engine’s original design. Before it was sent off, the CP3 fuel injection pump pushed gasoline through a pressure valve. The CP3 injection pumps are recognized for their dependability and longevity. New injectors were installed that are controlled by the ECM. While these injectors aren’t as long-lasting as the previous mechanical types, they tend to endure for hundreds of thousands of miles.
3rd Gen Cummins Turbochargers in 5.9L Engines
The third-generation Dodge Cummins engine has been offered in five distinct 5.9L varieties. Holset supplied the HE341CW turbocharger for this model year (2003). This turbocharger has a mechanical external wastegate and a fixed geometry design. In 2004.5, Cummins adds another new turbocharger to the lineup.
It helped improve emissions in Dodge’s Cummins pickup range while also providing significant performance gains. The Holset HE351CW is this turbocharger’s name. It’s also a fixed geometry unit, but it differs from the HE341 in that its wastegate is controlled digitally instead of manually.
3rd Generation 6.7L Cummins Specs
In 2007, Cummins started from the ground up and produced a new Cummins engine for model year 2007.5+ Ram pickup trucks. Diesel truck manufacturing with reduced emissions has prompted an upgrade to a new engine. Until now, Ram had avoided including an EGR on their diesel vehicles. Starting in 2007.5, on Dodge Cummins trucks, however, not only would they have an EGR but also a diesel particle filter system.
Large trucks utilized both air brakes and friction brakes in the early 20th century. During World War II, American engineers based in Europe developed them for the US military, and they were first used during the conflict. These systems helped to considerably lower overall emissions output, and they’re still operational on modern versions of these vehicles. Unfortunately, because of diesel particulate filter blockages or EGR malfunctions, pollutants are produced more frequently today. Emission equipment has gotten increasingly more dependable over time due to improved reliability.
Performance Specs
The 6.7L Cummins engine gave a superior performance and towing figures than the previous 5.9L Cummins engine. A new turbocharger was installed to achieve this, as well as slight modifications to the fuel injection system. The current engine is also quite different from the last 5.9l motor.
Variable Geometry Turbo
The final engine to use variable geometry turbocharging was the Cummins. The Ford 6.0L Powerstroke and the GM LLY Duramax have already benefited from a vgt setup. This turbocharger reduces emissions while also improving drivability significantly. It also adds exhaust braking to cars.
The turbo or exhaust brake is a type of aftermarket braking system that increases stopping distance while also potentially extending the life of your brakes when towing. The variable geometry turbocharger had its drawbacks, however. It becomes clogged over time as a result of regular usage. Aggressive driving and utilizing the exhaust brake on a regular basis can help to minimize issues.
Frequently Asked Questions
What Years Are The 3rd Gen Cummins?
The Dodge Cummins 3rd Gen was available from 2003-to 2007.5.
What Year Is The 3rd Gen Dodge?
The Dodge Cummins 3rd Gen was available from 2003-to 2007.5. What are the HP ratings for the 3rd Gen Dodge Cummins?
There is no definitive answer as horsepower ratings varied depending on the year, make, and model of the truck. However, the Dodge Cummins 3rd Gen was known to achieve up to 350hp in some models.
Is 5.9 or 6.7 Cummins Better?
The 6.7L Cummins engine gave a superior performance and towing figures than the previous 5.9L Cummins engine. A new turbocharger was installed to achieve this, as well as slight modifications to the fuel injection system. The current engine is also quite different from the last 5.9l motor.
What Was The Last Year Of The 5.9 Cummins?
The Dodge 5.9L Cummins engine was available from 1998-to 2002.5. What are the differences between a 3rd gen and 4th gen Dodge Cummins?
The main difference between the 3rd and 4th Gen Dodge Cummins engines is that the 4th Gen uses a common rail fuel injection system as opposed to the 3rd Gen’s inline pump. The 4th Gen also has improved emissions control systems. Finally, the 4th Gen utilizes electronic controls while the 3rd Gen relies on manual controls.
