Glacier Diesel Power 2003–2007 Dodge Ram 5.9L Cummins MK-2 Micro-Kleen Fuel Filter System (MK20306)
Description
The Bosch CP3 injection pump is one of the most important—and most expensive—components on your 2003–2007 5.9L Cummins. Protecting it starts with clean fuel.
The Glacier Diesel Power MK-2 Micro-Kleen Fuel Filter System adds a high-efficiency Fleetguard FF5320 fuel filter between the factory fuel filter housing and the CP3 injection pump, providing an additional level of filtration before fuel reaches your common rail injection system. Unlike complete fuel system replacements, the MK-2 installs using the factory steel fuel lines with no permanent modifications, making it an excellent upgrade for both stock and modified trucks.
Designed for trucks without an engine-mounted APPS, the MK-2 mounts neatly beneath the intake manifold for a clean factory-style appearance while keeping future filter changes quick and easy.
Features
- Fits 2003–2007 Dodge Ram 2500 & 3500 5.9L Cummins
- Designed for trucks without an engine-mounted APPS
- Genuine Fleetguard FF5320 high-efficiency fuel filter
- Adds secondary filtration before the CP3 injection pump
- Uses factory steel supply lines
- No permanent modifications required
- Mounts neatly beneath the intake manifold
- Easy spin-on filter replacement
- Supports stock and high-performance applications
- Made in the USA by Glacier Diesel Power
Why Install the MK-2?
Modern common rail fuel systems rely on extremely tight internal tolerances. Even small contaminants can contribute to unnecessary wear inside the CP3 injection pump and fuel injectors.
The MK-2 adds an additional stage of filtration after the factory filter, helping reduce the amount of fine particulate contamination reaching critical fuel system components while maintaining excellent fuel flow.
It's an ideal upgrade for:
- Daily drivers
- Tow rigs
- Work trucks
- Performance builds
- Long-term CP3 protection
Glacier Tech Tip
The Fleetguard FF5320 is trusted throughout the diesel industry for its combination of excellent filtration and high flow.
The filter is capable of flowing nearly 100 GPH while maintaining less than 1 PSI of pressure drop, allowing it to support virtually any level of performance modification without becoming a restriction.
Adding secondary filtration is one of the simplest ways to help protect the CP3 and injectors from fine particulate contamination over the life of the truck.
Why Glacier Built It This Way
Rather than replacing the factory fuel system, Glacier designed the MK-2 to complement it.
The system installs using the factory fuel lines, keeping installation straightforward while adding an additional layer of protection where it matters most—just before fuel enters the CP3 injection pump.
The under-intake mounting location keeps the filter protected while allowing easy access during routine maintenance, resulting in a clean installation that looks like it belongs under the hood.
Applications
Fits:
- 2003 Dodge Ram 2500 5.9L Cummins
- 2003 Dodge Ram 3500 5.9L Cummins
- 2004 Dodge Ram 2500 5.9L Cummins
- 2004 Dodge Ram 3500 5.9L Cummins
- 2005 Dodge Ram 2500 5.9L Cummins
- 2005 Dodge Ram 3500 5.9L Cummins
- 2006 Dodge Ram 2500 5.9L Cummins
- 2006 Dodge Ram 3500 5.9L Cummins
- 2007 Dodge Ram 2500 5.9L Cummins
- 2007 Dodge Ram 3500 5.9L Cummins
Important: This kit is designed for trucks without an engine-mounted APPS. It is compatible with stock intake manifolds and Glacier Power-Flo intake manifolds. If your truck has an engine-mounted APPS or an aftermarket intake manifold, Glacier offers an APPS-specific kit.
Kit Contents
The Glacier Diesel Power MK-2 Fuel Filter System includes:
- Fleetguard FF5320 fuel filter
- MK-2 mounting bracket
- Fuel hose and fittings
- Mounting hardware
- Installation components
Important Notes
- Fits 2003–2007 5.9L Common Rail Cummins.
- For trucks without engine-mounted APPS.
- Compatible with stock intake manifolds and Glacier Power-Flo intake manifolds.
- No permanent fuel system modifications required.
- Prime the fuel system after installation.
- Inspect all fuel connections for leaks before operating the engine.
Common Failure Point
The CP3 injection pump depends on a steady supply of clean fuel for lubrication and long-term reliability.
While the factory filtration system does a good job, adding a secondary high-efficiency filter provides another layer of protection against fine contaminants that can contribute to premature wear over time. Replacing the FF5320 at the recommended service interval helps maintain proper fuel flow and filtration.
Complete Your Fuel System
Complete your Common Rail fuel system with:
- Glacier Fuel Boss Mechanical Lift Pump
- Glacier MK-2 + Big Line Kit
- Glacier Fuel Pressure Gauge and Sender
- Glacier Fuel Pressure Test Fittings
- Glacier Fuel Tank Vent Kit
- Replacement Fleetguard FF5320 Fuel Filters
- Glacier Big Line Kits
Glacier Diesel Power 2003–2007 Dodge Ram 5.9L Cummins MK-2 Micro-Kleen Fuel Filter System (MK20306)
Description
The Bosch CP3 injection pump is one of the most important—and most expensive—components on your 2003–2007 5.9L Cummins. Protecting it starts with clean fuel.
The Glacier Diesel Power MK-2 Micro-Kleen Fuel Filter System adds a high-efficiency Fleetguard FF5320 fuel filter between the factory fuel filter housing and the CP3 injection pump, providing an additional level of filtration before fuel reaches your common rail injection system. Unlike complete fuel system replacements, the MK-2 installs using the factory steel fuel lines with no permanent modifications, making it an excellent upgrade for both stock and modified trucks.
Designed for trucks without an engine-mounted APPS, the MK-2 mounts neatly beneath the intake manifold for a clean factory-style appearance while keeping future filter changes quick and easy.
Features
- Fits 2003–2007 Dodge Ram 2500 & 3500 5.9L Cummins
- Designed for trucks without an engine-mounted APPS
- Genuine Fleetguard FF5320 high-efficiency fuel filter
- Adds secondary filtration before the CP3 injection pump
- Uses factory steel supply lines
- No permanent modifications required
- Mounts neatly beneath the intake manifold
- Easy spin-on filter replacement
- Supports stock and high-performance applications
- Made in the USA by Glacier Diesel Power
Why Install the MK-2?
Modern common rail fuel systems rely on extremely tight internal tolerances. Even small contaminants can contribute to unnecessary wear inside the CP3 injection pump and fuel injectors.
The MK-2 adds an additional stage of filtration after the factory filter, helping reduce the amount of fine particulate contamination reaching critical fuel system components while maintaining excellent fuel flow.
It's an ideal upgrade for:
- Daily drivers
- Tow rigs
- Work trucks
- Performance builds
- Long-term CP3 protection
Glacier Tech Tip
The Fleetguard FF5320 is trusted throughout the diesel industry for its combination of excellent filtration and high flow.
The filter is capable of flowing nearly 100 GPH while maintaining less than 1 PSI of pressure drop, allowing it to support virtually any level of performance modification without becoming a restriction.
Adding secondary filtration is one of the simplest ways to help protect the CP3 and injectors from fine particulate contamination over the life of the truck.
Why Glacier Built It This Way
Rather than replacing the factory fuel system, Glacier designed the MK-2 to complement it.
The system installs using the factory fuel lines, keeping installation straightforward while adding an additional layer of protection where it matters most—just before fuel enters the CP3 injection pump.
The under-intake mounting location keeps the filter protected while allowing easy access during routine maintenance, resulting in a clean installation that looks like it belongs under the hood.
Applications
Fits:
- 2003 Dodge Ram 2500 5.9L Cummins
- 2003 Dodge Ram 3500 5.9L Cummins
- 2004 Dodge Ram 2500 5.9L Cummins
- 2004 Dodge Ram 3500 5.9L Cummins
- 2005 Dodge Ram 2500 5.9L Cummins
- 2005 Dodge Ram 3500 5.9L Cummins
- 2006 Dodge Ram 2500 5.9L Cummins
- 2006 Dodge Ram 3500 5.9L Cummins
- 2007 Dodge Ram 2500 5.9L Cummins
- 2007 Dodge Ram 3500 5.9L Cummins
Important: This kit is designed for trucks without an engine-mounted APPS. It is compatible with stock intake manifolds and Glacier Power-Flo intake manifolds. If your truck has an engine-mounted APPS or an aftermarket intake manifold, Glacier offers an APPS-specific kit.
Kit Contents
The Glacier Diesel Power MK-2 Fuel Filter System includes:
- Fleetguard FF5320 fuel filter
- MK-2 mounting bracket
- Fuel hose and fittings
- Mounting hardware
- Installation components
Important Notes
- Fits 2003–2007 5.9L Common Rail Cummins.
- For trucks without engine-mounted APPS.
- Compatible with stock intake manifolds and Glacier Power-Flo intake manifolds.
- No permanent fuel system modifications required.
- Prime the fuel system after installation.
- Inspect all fuel connections for leaks before operating the engine.
Common Failure Point
The CP3 injection pump depends on a steady supply of clean fuel for lubrication and long-term reliability.
While the factory filtration system does a good job, adding a secondary high-efficiency filter provides another layer of protection against fine contaminants that can contribute to premature wear over time. Replacing the FF5320 at the recommended service interval helps maintain proper fuel flow and filtration.
Complete Your Fuel System
Complete your Common Rail fuel system with:
- Glacier Fuel Boss Mechanical Lift Pump
- Glacier MK-2 + Big Line Kit
- Glacier Fuel Pressure Gauge and Sender
- Glacier Fuel Pressure Test Fittings
- Glacier Fuel Tank Vent Kit
- Replacement Fleetguard FF5320 Fuel Filters
- Glacier Big Line Kits