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03-07 5.9L CUMMINS

03-07 5.9L CUMMINS

03-07 5.9L CUMMINS

2003–2007 Dodge Ram Cummins Parts (5.9L 24-Valve Common Rail)

The 2003–2007 Dodge Ram Cummins introduced the 5.9L 24-valve common rail platform with Bosch CP3 fuel injection. This design delivered higher power, cleaner emissions, and smoother operation compared to earlier VP44 trucks. At CPP Diesel, we carry everything from OEM Cummins parts to CPP Diesel performance upgrades—helping you maintain reliability, improve towing, and build serious horsepower.

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Why Choose CPP Diesel?

We’re diesel specialists with a focus on Cummins trucks. Whether you need a CP3 replacement, turbo upgrade, head studs, or 48RE transmission rebuild kit, CPP Diesel provides trusted OEM parts and high-performance upgrades to keep your truck on the road and ahead of the pack.

2003–2007 Dodge Cummins FAQ

What makes the 2003–2007 5.9 Cummins different?

These trucks feature the common rail 24-valve design with a Bosch CP3 injection pump, delivering more power, cleaner operation, and excellent tuning potential.

What are the most common issues with common rail Cummins trucks?

Worn injectors, weak lift pumps, and high mileage CP3 pump failures are the most common reliability concerns.

What upgrades improve performance on a 5.9L Cummins common rail?

Popular upgrades include larger injectors, CP3 pump modifications, turbo upgrades, head studs, exhaust systems, and 48RE transmission upgrades.

Do you carry OEM Cummins replacement parts?

Yes—CPP Diesel offers a full range of OEM Cummins parts along with proven CPP performance solutions.

How can I increase towing reliability?

Upgrade injectors and turbo for safe power, reinforce the 48RE transmission, and maintain the cooling system for sustained hauling performance.

 

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