Glacier Diesel Power 2003–2007 Dodge Ram 5.9L Cummins Power-Flo Intake Manifold (0307-PFI)
Description
The factory intake manifold on the 2003–2007 5.9L Common Rail Cummins does its job, but it wasn't designed with performance in mind. As horsepower, airflow, and boost increase, the factory manifold can become a restriction that limits your engine's potential.
The Glacier Diesel Power Power-Flo Intake Manifold is a direct replacement engineered to improve airflow while maintaining excellent air velocity. Unlike bulky cast manifolds that expand and then neck back down before entering the cylinder head, the Power-Flo utilizes a one-piece mandrel-bent tube that matches the factory intercooler piping diameter, helping maintain consistent airflow from the intercooler to the cylinder head.
Built using a one-piece mandrel-bent steel tube, precision-cut mounting flange, and internally powder-coated airflow path, the Power-Flo eliminates internal weld seams and fasteners from the intake tract for a smooth, unrestricted air path. The result is an intake manifold that looks great, installs easily, and performs equally well on daily drivers, tow rigs, and high-performance street trucks.
Like many Glacier Diesel Power products, this isn't a new design that's still proving itself. The Power-Flo has been trusted by Cummins enthusiasts for years and continues to be one of the most proven intake upgrades available for the 5.9L Common Rail platform.
Proudly designed and manufactured in the USA, every Power-Flo intake manifold is built with the quality, fit, and durability Glacier Diesel Power has become known for.
Features
- Designed and manufactured by Glacier Diesel Power
- Part Number: 0307-PFI
- Fits 2003–2007 Dodge Ram 5.9L Common Rail Cummins
- Direct factory replacement
- One-piece mandrel-bent steel construction
- Precision-cut mounting flange
- Smooth interior with no internal fasteners
- Internally powder-coated airflow path
- Maintains factory intercooler pipe diameter
- Factory dipstick tube mounting retained
- Factory rear mounting tabs retained
- Compatible with Glacier Diesel Power MK-2 Filter Kits without modification
- Two 1/4" NPT accessory ports
- Two 1/8" NPT accessory ports
- Includes new intake manifold gaskets
- Proudly Made in the USA
Why Upgrade Your Intake Manifold?
As airflow demand increases, the factory intake manifold can become a bottleneck. Larger turbochargers, increased fueling, performance tuning, and heavy towing all require more airflow than the factory manifold was designed to deliver.
The Power-Flo Intake Manifold was engineered to provide:
- Increased airflow
- Reduced intake restriction
- Improved throttle response
- Better air velocity
- Lower exhaust gas temperatures (EGTs)
- Support for larger turbochargers
- Convenient accessory ports for future upgrades
Rather than increasing plenum volume and then reducing it again before entering the engine, the Power-Flo maintains a consistent tubing diameter to help preserve air density and velocity throughout the intake path.
Glacier Tech Tip
One feature that often goes unnoticed is the factory-style mounting system.
The Power-Flo retains the factory dipstick mounting location along with the rear support tabs, making it the only intake manifold designed to work with Glacier Diesel Power's MK-2 Two Micron Filter Kits without modification.
The rear accessory boss also includes:
- Two 1/4" NPT ports
- Two 1/8" NPT ports
making it easy to install:
- Boost gauges
- Water/methanol injection
- Nitrous systems
- Pressure sensors
- Future accessories
Why Choose Glacier Diesel Power?
The Power-Flo wasn't designed simply to replace the factory intake manifold—it was engineered to improve airflow without sacrificing air velocity.
Its one-piece mandrel-bent construction eliminates internal weld seams and keeps fasteners completely out of the airflow path, producing a smooth interior that promotes efficient airflow while reducing potential turbulence. The internally powder-coated finish further helps create a smooth, corrosion-resistant intake tract.
Built with premium materials and manufactured in the USA, the Power-Flo has earned a reputation as one of the most trusted intake upgrades available for the 5.9L Common Rail Cummins.
Applications
Fits:
- 2003 Dodge Ram 2500 5.9L Common Rail Cummins
- 2003 Dodge Ram 3500 5.9L Common Rail Cummins
- 2004 Dodge Ram 2500 & 3500 5.9L Common Rail Cummins
- 2004.5 Dodge Ram 2500 & 3500 5.9L Common Rail Cummins
- 2005 Dodge Ram 2500 & 3500 5.9L Common Rail Cummins
- 2006 Dodge Ram 2500 & 3500 5.9L Common Rail Cummins
- 2007 Dodge Ram 2500 & 3500 5.9L Common Rail Cummins
Kit Contents
Includes:
- Glacier Diesel Power Power-Flo Intake Manifold
- New OEM-style intake manifold gaskets
Important Notes
- Fits 2003–2007 Dodge Ram 5.9L Common Rail Cummins.
- Direct replacement for the factory intake manifold.
- Factory dipstick mounting location retained.
- Factory rear mounting tabs retained.
- Compatible with Glacier Diesel Power MK-2 Filter Kits without modification.
- Includes two 1/4" NPT and two 1/8" NPT accessory ports.
- Includes new intake manifold gaskets.
- Not legal for sale or use in California where prohibited.
- Proudly designed and manufactured in the USA.
Factory Intake Manifold Limitations
The factory intake manifold was designed around production costs and packaging constraints. As airflow demand increases, the factory design can become restrictive while offering no convenient provisions for additional sensors or performance accessories.
The Glacier Diesel Power Power-Flo Intake Manifold addresses these limitations with a smooth one-piece mandrel-bent design, consistent airflow path, integrated accessory ports, and factory-style fitment that makes installation straightforward while leaving room for future performance upgrades.
Complete Your Intake System
Complete your intake package with:
- Glacier Diesel Power Pro-Flo Grid Heater Block
- Glacier Diesel Power Mega Rail Conversion Kit
- Glacier Diesel Power MK-2 Two Micron Fuel Filter Kit
- Glacier Diesel Power Fuel Boss Mechanical Lift Pump
- MAP Sensor & O-Ring
- Intake Manifold Gasket
- Glacier Diesel Power Silicone Boots
Glacier Diesel Power 2003–2007 Dodge Ram 5.9L Cummins Power-Flo Intake Manifold (0307-PFI)
Description
The factory intake manifold on the 2003–2007 5.9L Common Rail Cummins does its job, but it wasn't designed with performance in mind. As horsepower, airflow, and boost increase, the factory manifold can become a restriction that limits your engine's potential.
The Glacier Diesel Power Power-Flo Intake Manifold is a direct replacement engineered to improve airflow while maintaining excellent air velocity. Unlike bulky cast manifolds that expand and then neck back down before entering the cylinder head, the Power-Flo utilizes a one-piece mandrel-bent tube that matches the factory intercooler piping diameter, helping maintain consistent airflow from the intercooler to the cylinder head.
Built using a one-piece mandrel-bent steel tube, precision-cut mounting flange, and internally powder-coated airflow path, the Power-Flo eliminates internal weld seams and fasteners from the intake tract for a smooth, unrestricted air path. The result is an intake manifold that looks great, installs easily, and performs equally well on daily drivers, tow rigs, and high-performance street trucks.
Like many Glacier Diesel Power products, this isn't a new design that's still proving itself. The Power-Flo has been trusted by Cummins enthusiasts for years and continues to be one of the most proven intake upgrades available for the 5.9L Common Rail platform.
Proudly designed and manufactured in the USA, every Power-Flo intake manifold is built with the quality, fit, and durability Glacier Diesel Power has become known for.
Features
- Designed and manufactured by Glacier Diesel Power
- Part Number: 0307-PFI
- Fits 2003–2007 Dodge Ram 5.9L Common Rail Cummins
- Direct factory replacement
- One-piece mandrel-bent steel construction
- Precision-cut mounting flange
- Smooth interior with no internal fasteners
- Internally powder-coated airflow path
- Maintains factory intercooler pipe diameter
- Factory dipstick tube mounting retained
- Factory rear mounting tabs retained
- Compatible with Glacier Diesel Power MK-2 Filter Kits without modification
- Two 1/4" NPT accessory ports
- Two 1/8" NPT accessory ports
- Includes new intake manifold gaskets
- Proudly Made in the USA
Why Upgrade Your Intake Manifold?
As airflow demand increases, the factory intake manifold can become a bottleneck. Larger turbochargers, increased fueling, performance tuning, and heavy towing all require more airflow than the factory manifold was designed to deliver.
The Power-Flo Intake Manifold was engineered to provide:
- Increased airflow
- Reduced intake restriction
- Improved throttle response
- Better air velocity
- Lower exhaust gas temperatures (EGTs)
- Support for larger turbochargers
- Convenient accessory ports for future upgrades
Rather than increasing plenum volume and then reducing it again before entering the engine, the Power-Flo maintains a consistent tubing diameter to help preserve air density and velocity throughout the intake path.
Glacier Tech Tip
One feature that often goes unnoticed is the factory-style mounting system.
The Power-Flo retains the factory dipstick mounting location along with the rear support tabs, making it the only intake manifold designed to work with Glacier Diesel Power's MK-2 Two Micron Filter Kits without modification.
The rear accessory boss also includes:
- Two 1/4" NPT ports
- Two 1/8" NPT ports
making it easy to install:
- Boost gauges
- Water/methanol injection
- Nitrous systems
- Pressure sensors
- Future accessories
Why Choose Glacier Diesel Power?
The Power-Flo wasn't designed simply to replace the factory intake manifold—it was engineered to improve airflow without sacrificing air velocity.
Its one-piece mandrel-bent construction eliminates internal weld seams and keeps fasteners completely out of the airflow path, producing a smooth interior that promotes efficient airflow while reducing potential turbulence. The internally powder-coated finish further helps create a smooth, corrosion-resistant intake tract.
Built with premium materials and manufactured in the USA, the Power-Flo has earned a reputation as one of the most trusted intake upgrades available for the 5.9L Common Rail Cummins.
Applications
Fits:
- 2003 Dodge Ram 2500 5.9L Common Rail Cummins
- 2003 Dodge Ram 3500 5.9L Common Rail Cummins
- 2004 Dodge Ram 2500 & 3500 5.9L Common Rail Cummins
- 2004.5 Dodge Ram 2500 & 3500 5.9L Common Rail Cummins
- 2005 Dodge Ram 2500 & 3500 5.9L Common Rail Cummins
- 2006 Dodge Ram 2500 & 3500 5.9L Common Rail Cummins
- 2007 Dodge Ram 2500 & 3500 5.9L Common Rail Cummins
Kit Contents
Includes:
- Glacier Diesel Power Power-Flo Intake Manifold
- New OEM-style intake manifold gaskets
Important Notes
- Fits 2003–2007 Dodge Ram 5.9L Common Rail Cummins.
- Direct replacement for the factory intake manifold.
- Factory dipstick mounting location retained.
- Factory rear mounting tabs retained.
- Compatible with Glacier Diesel Power MK-2 Filter Kits without modification.
- Includes two 1/4" NPT and two 1/8" NPT accessory ports.
- Includes new intake manifold gaskets.
- Not legal for sale or use in California where prohibited.
- Proudly designed and manufactured in the USA.
Factory Intake Manifold Limitations
The factory intake manifold was designed around production costs and packaging constraints. As airflow demand increases, the factory design can become restrictive while offering no convenient provisions for additional sensors or performance accessories.
The Glacier Diesel Power Power-Flo Intake Manifold addresses these limitations with a smooth one-piece mandrel-bent design, consistent airflow path, integrated accessory ports, and factory-style fitment that makes installation straightforward while leaving room for future performance upgrades.
Complete Your Intake System
Complete your intake package with:
- Glacier Diesel Power Pro-Flo Grid Heater Block
- Glacier Diesel Power Mega Rail Conversion Kit
- Glacier Diesel Power MK-2 Two Micron Fuel Filter Kit
- Glacier Diesel Power Fuel Boss Mechanical Lift Pump
- MAP Sensor & O-Ring
- Intake Manifold Gasket
- Glacier Diesel Power Silicone Boots