Overview of 5.9 Cummins Engines (1997-2007)

The 1997-2007 5.9L Cummins, found in Dodge Ram 2500/3500/4500/5500, is legendary for reliability but thrives with upgrades.

Common issues like fuel system wear or restricted exhaust are solved with our performance parts. Our 5.9 Cummins EGR DPF delete and tuner setup is rigorously tested for peak performance.

Key Performance Upgrades for 5.9 Cummins

Elevate your truck with targeted enhancements:

Intake & Intercooler Upgrades for Enhanced Performance

Improve airflow with high-flow intakes and intercoolers, reducing EGTs and boosting combustion. Ideal for 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, and 2007 Cummins diesel engines, these upgrades deliver smoother power.

Turbo & Exhaust Performance Kits

Swap stock turbos for larger ones and add a Dodge Cummins exhaust system, such as those for the 2003, 2004, 2005, 2006, or 2007 Dodge Ram 2500 5.9 Cummins. Our kits cut backpressure for torque gains in Dodge Ram 2500 5.9 Cummins exhaust applications.

Fuel System Enhancements and Injector Upgrades

Upgrade injectors and pumps for precise fuel delivery, preventing CP3 issues. Compatible with the 1997-2007 Ram 2500/3500/4500/5500 exhaust, these enhance efficiency.

Performance Tuners and Programmers for 5.9 Cummins

Fine-tune with 1997-2007 5.9 Cummins tuners for custom maps, adding 100+ HP safely.

Common Maintenance Parts for 5.9 Cummins

Keep your engine running strong with oil catch cans, fuel sumps, and rail pressure plugs—essential for longevity in 2007 Dodge Ram 5.9 Cummins or older models.

How to Choose the Right Performance Parts for Your 5.9 Cummins

Match parts to your needs: towing favors exhaust upgrades like 2006 5.9 Cummins exhaust, while racing suits full kits. Our 10+ years of expertise, industry certifications, and positive EGR performance reviews guide you.

Benefits of Upgrading Your 5.9 Cummins

Upgrades boost 20-30% power, improve MPG, cut maintenance, lower temps, and enhance durability—saving long-term on repairs. Our high-quality kits offer unmatched value.

Here’s the list of our 5.9 Cummins Performance Kits:

• * RAM 2500 5.9 Cummins 1994-1997 High Flow Intake
  * RAM 2500 5.9 Cummins 1994-1998 Spline Tooth
  * RAM 2500 5.9 Cummins 1994-2002 Intercooler Pipe
  * RAM 2500 5.9 Cummins 1994-2002 Intercooler Boot
  * RAM 2500 5.9 Cummins 1994-2002 Intercooler Boot
  * RAM 2500 5.9 Cummins 1998-2002 High Flow Intake
  * RAM 2500 5.9 Cummins 2003-2007 Intercooler Pipe
  * RAM 2500 5.9 Cummins 2003-2007 High Flow Intake

Choose EGR Performance for superior support and proven results—upgrade today!

Frequently Asked Questions

Q: Do 5.9 Cummins have CP3 problems?

A: Yes, 5.9 Cummins engines can experience CP3 fuel pump issues, particularly in higher-mileage trucks or those with heavy modifications.

However, upgrading the fuel system with a high-performance CP3 pump or adding a dual pump system can prevent these failures and ensure better fuel delivery, especially for those pushing their engines to higher power levels.

Q: How much horsepower can a 5.9 Cummins handle?

A: The stock 5.9 Cummins engine can reliably handle up to 600 horsepower, but any modifications beyond this, such as larger turbos, injectors, or tuning, may require additional upgrades to ensure the engine remains durable.

Proper tuning and supporting mods are essential for safely pushing the limits of horsepower.

Q: What size turbo does a 5.9 Cummins have?

A: The factory turbo on a 5.9 Cummins typically ranges between 58mm and 62mm in size, depending on the model year.

For those looking for more performance, turbo upgrades can go much larger, with aftermarket options ranging up to 67mm or higher to increase airflow and support higher horsepower.

Q: What happens if you put bigger injectors on a stock motor?

A: Installing larger injectors on a stock 5.9 Cummins engine without proper tuning can lead to fuel over-delivery, resulting in excess smoke, poor fuel economy, and potential engine damage.

Tuning is essential to ensure the correct amount of fuel is injected for the engine's performance and longevity.

Q: What is the life expectancy of a Cummins turbo?

A: With proper maintenance, a Cummins turbo can last 200,000 miles or more. Regular oil changes, clean air filters, and proper cooling are essential to maintaining the turbo’s lifespan.

Neglecting these maintenance practices can lead to premature failure of the turbocharger.