Glacier Diesel Power 2003–2007 Dodge Ram 5.9L Cummins Air-Boss CR Intake Plenum (0307-ABIP)
Description
High EGTs and limited airflow to the rear cylinders can become increasingly important as fueling and performance increase on the 2003–2007 5.9L Common Rail Cummins.
The Glacier Diesel Power Air-Boss CR Intake Plenum was engineered to address that restriction by dramatically increasing the available airflow area through the factory intake plenum while helping deliver more air toward cylinders 4, 5, and 6.
The Air-Boss CR isn't simply a flat aluminum replacement plate. Its true elevated plenum design takes advantage of the available space above the cylinder head to create substantially more room for incoming air.
The result is a 30% increase in available plenum area toward the rear cylinders, helping improve airflow distribution, reduce EGTs, and support increased fueling and performance modifications.
For Cummins owners looking for one of the largest practical bolt-on airflow improvements without milling the factory cast plenum from the cylinder head and installing a fully fabricated intake system, the Air-Boss CR provides a proven Glacier Diesel Power solution.
Features
- Designed specifically for 2003–2007 Dodge Ram 5.9L Common Rail Cummins
- Part Number: 0307-ABIP
- True elevated Air-Boss intake plenum design
- Provides approximately 30% more available plenum area toward the rear cylinders
- Designed to improve airflow toward cylinders 4, 5, and 6
- Helps reduce intake restriction
- Designed to help reduce EGTs
- Supports increased fueling and performance modifications
- Maintains factory intercooler piping-to-intake manifold geometry
- Compatible with stock mounting hardware
- Compatible with stock and aftermarket intake manifolds
- Custom-height grid heater delete block available
- Factory grid heater retention option available
- Includes shortened injector line retaining brackets
- Multiple grid heater configurations available
Why Upgrade to the Air-Boss CR?
As fueling and airflow demands increase, getting enough air through the factory intake system becomes increasingly important.
The rear cylinders—particularly cylinders 5 and 6—are an area where airflow and heat management deserve attention on higher-output Cummins applications.
That's where the Air-Boss CR is different from a basic intake plate.
Instead of simply replacing the factory cover with another flat plate, the Air-Boss uses an elevated design to increase the usable area inside the intake plenum.
Glacier Diesel Power's design opens up the available plenum area toward the rear cylinders by approximately 30%.
The additional airflow capacity helps provide:
- Increased airflow
- Improved airflow toward cylinders 4, 5, and 6
- Reduced intake restriction
- Lower EGTs
- Better support for increased fueling
- Additional airflow capacity for larger turbochargers and performance upgrades
More Than a Flat Intake Plate
There are plenty of simple intake and grid heater delete plates available.
The Air-Boss CR isn't one of them.
The entire purpose of the Air-Boss design is to use the available space above the cylinder head to increase the usable area inside the intake plenum.
Rather than simply covering the factory opening with a flat piece of aluminum, the Air-Boss is elevated to create additional internal airflow area.
On the 2003–2007 Common Rail application, that design provides approximately 30% more available plenum area toward the rear cylinders.
For customers looking for a substantial bolt-on airflow improvement without cutting the factory cast intake plenum from the cylinder head, the Air-Boss CR provides a proven alternative.
Maintains Proper Intake Geometry
Increasing the height of the intake plenum creates another challenge: maintaining the proper relationship between the intercooler piping and intake manifold.
Glacier Diesel Power addressed this with a custom-height grid heater delete block designed specifically around the increased height of the Air-Boss CR.
This maintains the factory intercooler piping-to-intake manifold connection geometry while allowing the Air-Boss to create additional internal plenum area.
Maintaining that geometry also allows the Air-Boss CR to remain compatible with stock mounting hardware and aftermarket intake manifolds.
It's an important detail because increasing airflow shouldn't require creating unnecessary fitment problems somewhere else in the intake system.
Grid Heater Options
The Air-Boss CR is available in multiple configurations depending on how your truck is used and whether you need cold-weather intake heating.
Grid Heater Delete
The standard Air-Boss CR configuration includes a custom-height grid heater delete block designed to maintain the proper intake and intercooler piping geometry.
Factory Grid Heater
For customers operating in colder climates, the Air-Boss CR can be configured to retain the factory grid heater. This configuration uses custom-length stainless steel studs to accommodate the increased height of the Air-Boss CR.
Grid Heater + Delete Block
For customers who want the flexibility to switch between the factory grid heater and grid heater delete configuration, an option is available that includes the components necessary for both setups.
Glacier Tech Tip
The benefits of the Air-Boss CR become increasingly important as airflow and fueling demands increase.
Larger injectors, upgraded turbochargers, increased fueling, towing under sustained load, and high-performance applications all increase the amount of air the engine needs to move efficiently.
Opening the plenum area toward the rear cylinders by approximately 30% gives incoming air additional room to reach cylinders 4, 5, and 6 while helping reduce restriction through the intake system.
Because the Air-Boss CR maintains the factory intake connection geometry, it can also be paired with stock or aftermarket intake manifolds to build a more complete high-flow intake system.
Why Choose Glacier Diesel Power?
The Air-Boss CR represents the same engineering philosophy found throughout the Glacier Diesel Power intake lineup:
Don't just remove a restriction—engineer a better solution.
Instead of producing another flat intake plate, Glacier Diesel Power designed the Air-Boss CR to increase the actual usable area inside the intake plenum while maintaining proper intake geometry and compatibility with the components surrounding it.
The result is a purpose-built intake upgrade designed specifically around the needs of the 5.9L Common Rail Cummins.
Purpose-built. Performance proven. Engineered by Glacier Diesel Power.
Applications
Designed for:
- 2003 Dodge Ram 2500 & 3500 5.9L Cummins
- 2004 Dodge Ram 2500 & 3500 5.9L Cummins
- 2005 Dodge Ram 2500 & 3500 5.9L Cummins
- 2006 Dodge Ram 2500 & 3500 5.9L Cummins
- 2007 Dodge Ram 2500 & 3500 5.9L Cummins
Kit Contents
Kit contents vary depending on the selected grid heater configuration and may include:
- Glacier Diesel Power Air-Boss CR Intake Plenum Cover
- Factory-style gaskets
- Custom-height grid heater delete block
- Custom-length stainless steel grid heater studs when applicable
- Shortened injector line retaining brackets
Important Notes
- Fits 2003–2007 Dodge Ram 5.9L Common Rail Cummins applications.
- Part Number: 0307-ABIP
- Provides approximately 30% more available plenum area toward the rear cylinders.
- Designed to improve airflow toward cylinders 4, 5, and 6.
- Maintains factory intercooler piping-to-intake manifold geometry.
- Compatible with stock mounting hardware.
- Compatible with stock and aftermarket intake manifolds.
- Standard configuration includes a custom-height grid heater delete block.
- Factory grid heater retention configuration is available for colder climates.
- Combination grid heater and delete configurations are available.
- Kit contents vary depending on the selected grid heater option.
- Does NOT ship to California.
Complete Your Intake System
Pair the Air-Boss CR with:
- Glacier Diesel Power 2003–2007 5.9L Cummins Power-Flo Intake Manifold
- Glacier Diesel Power 2003–2007 5.9L Cummins Twin CP3 Big Line Kit
- Glacier Diesel Power Intake Manifold Gaskets
- Glacier Diesel Power Boost Bolt
- Glacier Diesel Power Fuel System Upgrades
Glacier Diesel Power 2003–2007 Dodge Ram 5.9L Cummins Air-Boss CR Intake Plenum (0307-ABIP)
Description
High EGTs and limited airflow to the rear cylinders can become increasingly important as fueling and performance increase on the 2003–2007 5.9L Common Rail Cummins.
The Glacier Diesel Power Air-Boss CR Intake Plenum was engineered to address that restriction by dramatically increasing the available airflow area through the factory intake plenum while helping deliver more air toward cylinders 4, 5, and 6.
The Air-Boss CR isn't simply a flat aluminum replacement plate. Its true elevated plenum design takes advantage of the available space above the cylinder head to create substantially more room for incoming air.
The result is a 30% increase in available plenum area toward the rear cylinders, helping improve airflow distribution, reduce EGTs, and support increased fueling and performance modifications.
For Cummins owners looking for one of the largest practical bolt-on airflow improvements without milling the factory cast plenum from the cylinder head and installing a fully fabricated intake system, the Air-Boss CR provides a proven Glacier Diesel Power solution.
Features
- Designed specifically for 2003–2007 Dodge Ram 5.9L Common Rail Cummins
- Part Number: 0307-ABIP
- True elevated Air-Boss intake plenum design
- Provides approximately 30% more available plenum area toward the rear cylinders
- Designed to improve airflow toward cylinders 4, 5, and 6
- Helps reduce intake restriction
- Designed to help reduce EGTs
- Supports increased fueling and performance modifications
- Maintains factory intercooler piping-to-intake manifold geometry
- Compatible with stock mounting hardware
- Compatible with stock and aftermarket intake manifolds
- Custom-height grid heater delete block available
- Factory grid heater retention option available
- Includes shortened injector line retaining brackets
- Multiple grid heater configurations available
Why Upgrade to the Air-Boss CR?
As fueling and airflow demands increase, getting enough air through the factory intake system becomes increasingly important.
The rear cylinders—particularly cylinders 5 and 6—are an area where airflow and heat management deserve attention on higher-output Cummins applications.
That's where the Air-Boss CR is different from a basic intake plate.
Instead of simply replacing the factory cover with another flat plate, the Air-Boss uses an elevated design to increase the usable area inside the intake plenum.
Glacier Diesel Power's design opens up the available plenum area toward the rear cylinders by approximately 30%.
The additional airflow capacity helps provide:
- Increased airflow
- Improved airflow toward cylinders 4, 5, and 6
- Reduced intake restriction
- Lower EGTs
- Better support for increased fueling
- Additional airflow capacity for larger turbochargers and performance upgrades
More Than a Flat Intake Plate
There are plenty of simple intake and grid heater delete plates available.
The Air-Boss CR isn't one of them.
The entire purpose of the Air-Boss design is to use the available space above the cylinder head to increase the usable area inside the intake plenum.
Rather than simply covering the factory opening with a flat piece of aluminum, the Air-Boss is elevated to create additional internal airflow area.
On the 2003–2007 Common Rail application, that design provides approximately 30% more available plenum area toward the rear cylinders.
For customers looking for a substantial bolt-on airflow improvement without cutting the factory cast intake plenum from the cylinder head, the Air-Boss CR provides a proven alternative.
Maintains Proper Intake Geometry
Increasing the height of the intake plenum creates another challenge: maintaining the proper relationship between the intercooler piping and intake manifold.
Glacier Diesel Power addressed this with a custom-height grid heater delete block designed specifically around the increased height of the Air-Boss CR.
This maintains the factory intercooler piping-to-intake manifold connection geometry while allowing the Air-Boss to create additional internal plenum area.
Maintaining that geometry also allows the Air-Boss CR to remain compatible with stock mounting hardware and aftermarket intake manifolds.
It's an important detail because increasing airflow shouldn't require creating unnecessary fitment problems somewhere else in the intake system.
Grid Heater Options
The Air-Boss CR is available in multiple configurations depending on how your truck is used and whether you need cold-weather intake heating.
Grid Heater Delete
The standard Air-Boss CR configuration includes a custom-height grid heater delete block designed to maintain the proper intake and intercooler piping geometry.
Factory Grid Heater
For customers operating in colder climates, the Air-Boss CR can be configured to retain the factory grid heater. This configuration uses custom-length stainless steel studs to accommodate the increased height of the Air-Boss CR.
Grid Heater + Delete Block
For customers who want the flexibility to switch between the factory grid heater and grid heater delete configuration, an option is available that includes the components necessary for both setups.
Glacier Tech Tip
The benefits of the Air-Boss CR become increasingly important as airflow and fueling demands increase.
Larger injectors, upgraded turbochargers, increased fueling, towing under sustained load, and high-performance applications all increase the amount of air the engine needs to move efficiently.
Opening the plenum area toward the rear cylinders by approximately 30% gives incoming air additional room to reach cylinders 4, 5, and 6 while helping reduce restriction through the intake system.
Because the Air-Boss CR maintains the factory intake connection geometry, it can also be paired with stock or aftermarket intake manifolds to build a more complete high-flow intake system.
Why Choose Glacier Diesel Power?
The Air-Boss CR represents the same engineering philosophy found throughout the Glacier Diesel Power intake lineup:
Don't just remove a restriction—engineer a better solution.
Instead of producing another flat intake plate, Glacier Diesel Power designed the Air-Boss CR to increase the actual usable area inside the intake plenum while maintaining proper intake geometry and compatibility with the components surrounding it.
The result is a purpose-built intake upgrade designed specifically around the needs of the 5.9L Common Rail Cummins.
Purpose-built. Performance proven. Engineered by Glacier Diesel Power.
Applications
Designed for:
- 2003 Dodge Ram 2500 & 3500 5.9L Cummins
- 2004 Dodge Ram 2500 & 3500 5.9L Cummins
- 2005 Dodge Ram 2500 & 3500 5.9L Cummins
- 2006 Dodge Ram 2500 & 3500 5.9L Cummins
- 2007 Dodge Ram 2500 & 3500 5.9L Cummins
Kit Contents
Kit contents vary depending on the selected grid heater configuration and may include:
- Glacier Diesel Power Air-Boss CR Intake Plenum Cover
- Factory-style gaskets
- Custom-height grid heater delete block
- Custom-length stainless steel grid heater studs when applicable
- Shortened injector line retaining brackets
Important Notes
- Fits 2003–2007 Dodge Ram 5.9L Common Rail Cummins applications.
- Part Number: 0307-ABIP
- Provides approximately 30% more available plenum area toward the rear cylinders.
- Designed to improve airflow toward cylinders 4, 5, and 6.
- Maintains factory intercooler piping-to-intake manifold geometry.
- Compatible with stock mounting hardware.
- Compatible with stock and aftermarket intake manifolds.
- Standard configuration includes a custom-height grid heater delete block.
- Factory grid heater retention configuration is available for colder climates.
- Combination grid heater and delete configurations are available.
- Kit contents vary depending on the selected grid heater option.
- Does NOT ship to California.
Complete Your Intake System
Pair the Air-Boss CR with:
- Glacier Diesel Power 2003–2007 5.9L Cummins Power-Flo Intake Manifold
- Glacier Diesel Power 2003–2007 5.9L Cummins Twin CP3 Big Line Kit
- Glacier Diesel Power Intake Manifold Gaskets
- Glacier Diesel Power Boost Bolt
- Glacier Diesel Power Fuel System Upgrades