Fuel Economy Package 2003-2007 5.9L Cummins
Fuel Economy Package 2003-2007 5.9L Cummins
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Fuel Economy Package – 2003–2007 5.9L Cummins (Common Rail)
This Fuel Economy Package is designed for 2003–2007 common-rail Cummins trucks looking to improve fuel efficiency, lower EGTs, and increase overall drivability without sacrificing reliability.
By reducing airflow restriction, improving charge-air cooling, and stabilizing fuel delivery, this package helps your engine work more efficiently, especially during highway driving and towing.
This is not a race or high-horsepower package — it’s built for real-world MPG gains and long-term engine protection.
What’s Included
• S&B Cold Air Intake
• Banks Intercooler with Monster Ram Air Intake & Piping
• BD Exhaust Manifold
• FASS Fuel System (Stock–600 HP)
Key Benefits
• Improved airflow and reduced intake restriction
• Lower exhaust gas temperatures (EGTs)
• More efficient combustion
• Stabilized fuel pressure and cleaner fuel delivery
• Improved throttle response and drivability
• Increased fuel system reliability and injector protection
Fuel Economy Expectations
This package is designed to improve fuel efficiency, not add horsepower.
• Typical fuel economy gains: +1–3 MPG
• Most noticeable during highway driving and towing
• Results vary based on driving style, load weight, and vehicle condition
MPG gains are not guaranteed and depend heavily on driving habits and supporting modifications.
Who This Package Is For
• Daily-driven trucks
• Highway commuters
• Tow rigs focused on efficiency
• Owners wanting better MPG without aggressive tuning
Who This Package Is NOT For
• Performance or race builds
• Customers chasing maximum horsepower
• Aggressive fueling or turbo upgrades
Fitment & Installation Notes
• Fits 2003–2007 5.9L Cummins (common rail)
• Professional installation recommended
• Supporting maintenance and tuning may improve results
Why This Package Makes Sense
This package improves fuel economy by helping your engine breathe better, run cooler, and receive clean, consistent fuel. It also protects critical fuel system components, making it a smart upgrade for owners focused on efficiency, reliability, and longevity.
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FAQ
How long does shipping take?
Most products ship in 3–7 days. Some will take longer. If a product needs more time, it will say so on its product page.
How do I know if a product fits my truck?
Each product page lists the year, make, and model it fits.
If you’re unsure, you can message us through our website, email, or Facebook, and we’ll confirm fitment for you.
Do you offer installation?
Yes. PSC Automotive & Diesel Repair installs everything we sell.
Call or message us to schedule an appointment.
What is your return policy?
- Returns accepted on new, unused items.
Some items are subject to a restocking fee, depending on the manufacturer.
Electrical parts, tuners, and custom-built items are non-returnable.
Full details are on our Refunds page.
What is your warranty policy?
Our warranty matches the manufacturer’s warranty.
If a part fails or has a defect, we will work with the manufacturer to get it replaced.
We do not warranty parts that were:
Installed incorrectly
Damaged by lack of maintenance
Removed or messed with after installation
Installed by another shop after we installed it
Full warranty details are on our Warranty page.
Will I get tracking information?
Yes. Tracking is emailed to you as soon as your order ships.
Check your spam folder if you don’t see it.
Do you offer customer support?
Yes! You can contact us anytime at:
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We reply quickly during business hours.