Glacier Diesel Power 2003–2007 Dodge Ram 5.9L Cummins MK-2 Micro-Kleen Fuel Filter System & 3/8" Big Line Kit (MK20306-BLK)
Description
Your CP3 injection pump depends on a steady supply of clean, unrestricted fuel. The Glacier Diesel Power MK-2 Micro-Kleen Fuel Filter System & Big Line Kit was engineered to provide both by combining Glacier's proven secondary fuel filtration system with its high-flow 3/8-inch Big Line Kit.
Designed for 2003–2007 Dodge Ram 5.9L Cummins trucks without an engine-mounted APPS, the MK-2+ adds a genuine Fleetguard FF5320 high-efficiency fuel filter between the factory fuel filter housing and the CP3 injection pump while replacing the restrictive factory supply line with premium 3/8-inch fuel hose and high-flow fittings. The result is cleaner fuel, improved fuel delivery, and better protection for one of the most expensive components in your common rail fuel system.
Whether your truck is a daily driver, tow rig, or high-horsepower build, the MK-2+ delivers the fuel flow and filtration needed to support reliable performance.
Features
- Fits 2003–2007 Dodge Ram 2500 & 3500 5.9L Cummins
- Genuine Fleetguard FF5320 high-efficiency fuel filter
- Glacier 3/8-inch Big Line Kit included
- Adds secondary filtration before the CP3 injection pump
- Replaces the restrictive factory supply line
- High-flow Push-Lok hose and premium fittings
- Clean under-intake manifold mounting location
- Easy spin-on filter replacement
- Supports stock and high-performance applications
- Made in the USA by Glacier Diesel Power
Why Upgrade to the MK-2 + Big Line Kit?
Factory filtration does a good job, but the factory line feeding the CP3 can become a restriction—especially as horsepower and fuel demand increase.
The MK-2+ improves the fuel system in two important ways:
- Adds a second stage of high-efficiency filtration before the CP3.
- Replaces the restrictive factory fuel line with Glacier's proven 3/8-inch Big Line Kit.
This combination helps deliver cleaner fuel while reducing restriction between the factory filter housing and the injection pump, making it an excellent upgrade for stock trucks as well as performance applications.
Glacier Tech Tip
The Fleetguard FF5320 is trusted throughout the diesel industry for its combination of excellent filtration and exceptional flow.
Combined with Glacier's 3/8-inch Big Line Kit, the system is capable of supporting nearly any level of performance modification while maintaining excellent fuel delivery. The FF5320 flows nearly 100 GPH with less than 1 PSI of pressure drop, providing outstanding filtration without sacrificing performance.
Why Glacier Built It This Way
Glacier designed the MK-2+ to solve two common limitations of the factory fuel system.
Instead of simply adding another filter, the system also replaces the restrictive factory supply line between the stock filter housing and the CP3 with high-flow 3/8-inch fuel hose and premium fittings. This provides increased fuel volume while maintaining the added protection of secondary filtration.
Everything mounts neatly beneath the intake manifold for a clean, factory-style appearance while keeping routine filter changes quick and convenient.
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. For trucks equipped with an engine-mounted APPS or most aftermarket intake manifolds, Glacier offers an APPS-specific version.
Kit Contents
The Glacier Diesel Power MK-2+ Kit includes:
- Fleetguard FF5320 fuel filter
- MK-2 mounting bracket
- Glacier 3/8-inch Big Line Kit
- High-flow fuel hose and fittings
- Mounting hardware
- Installation components
Important Notes
- Fits 2003–2007 5.9L Common Rail Cummins.
- Designed for trucks without an engine-mounted APPS.
- Compatible with stock intake manifolds and Glacier Power-Flo intake manifolds.
- No permanent modifications required.
- Prime the fuel system after installation.
- Inspect all fuel connections for leaks before operating the engine.
Common Failure Point
The factory supply line between the fuel filter housing and CP3 is one of the more restrictive sections of the factory fuel system. As fuel demand increases, restriction can limit fuel delivery while fine contaminants continue toward the injection pump.
The MK-2+ addresses both concerns by combining high-flow fuel plumbing with secondary filtration, helping maintain proper fuel delivery while providing additional protection for the CP3 and injectors.
Complete Your Fuel System
Complete your Common Rail fuel system with:
- Glacier Fuel Boss Mechanical Lift Pump
- Glacier Fuel Pressure Gauge and Sender
- Glacier Fuel Pressure Test Fittings
- Glacier Fuel Tank Vent Kit
- Replacement Fleetguard FF5320 Fuel Filters
- Glacier Big Line Accessories
- Glacier Fuel Return Line Upgrades
Glacier Diesel Power 2003–2007 Dodge Ram 5.9L Cummins MK-2 Micro-Kleen Fuel Filter System & 3/8" Big Line Kit (MK20306-BLK)
Description
Your CP3 injection pump depends on a steady supply of clean, unrestricted fuel. The Glacier Diesel Power MK-2 Micro-Kleen Fuel Filter System & Big Line Kit was engineered to provide both by combining Glacier's proven secondary fuel filtration system with its high-flow 3/8-inch Big Line Kit.
Designed for 2003–2007 Dodge Ram 5.9L Cummins trucks without an engine-mounted APPS, the MK-2+ adds a genuine Fleetguard FF5320 high-efficiency fuel filter between the factory fuel filter housing and the CP3 injection pump while replacing the restrictive factory supply line with premium 3/8-inch fuel hose and high-flow fittings. The result is cleaner fuel, improved fuel delivery, and better protection for one of the most expensive components in your common rail fuel system.
Whether your truck is a daily driver, tow rig, or high-horsepower build, the MK-2+ delivers the fuel flow and filtration needed to support reliable performance.
Features
- Fits 2003–2007 Dodge Ram 2500 & 3500 5.9L Cummins
- Genuine Fleetguard FF5320 high-efficiency fuel filter
- Glacier 3/8-inch Big Line Kit included
- Adds secondary filtration before the CP3 injection pump
- Replaces the restrictive factory supply line
- High-flow Push-Lok hose and premium fittings
- Clean under-intake manifold mounting location
- Easy spin-on filter replacement
- Supports stock and high-performance applications
- Made in the USA by Glacier Diesel Power
Why Upgrade to the MK-2 + Big Line Kit?
Factory filtration does a good job, but the factory line feeding the CP3 can become a restriction—especially as horsepower and fuel demand increase.
The MK-2+ improves the fuel system in two important ways:
- Adds a second stage of high-efficiency filtration before the CP3.
- Replaces the restrictive factory fuel line with Glacier's proven 3/8-inch Big Line Kit.
This combination helps deliver cleaner fuel while reducing restriction between the factory filter housing and the injection pump, making it an excellent upgrade for stock trucks as well as performance applications.
Glacier Tech Tip
The Fleetguard FF5320 is trusted throughout the diesel industry for its combination of excellent filtration and exceptional flow.
Combined with Glacier's 3/8-inch Big Line Kit, the system is capable of supporting nearly any level of performance modification while maintaining excellent fuel delivery. The FF5320 flows nearly 100 GPH with less than 1 PSI of pressure drop, providing outstanding filtration without sacrificing performance.
Why Glacier Built It This Way
Glacier designed the MK-2+ to solve two common limitations of the factory fuel system.
Instead of simply adding another filter, the system also replaces the restrictive factory supply line between the stock filter housing and the CP3 with high-flow 3/8-inch fuel hose and premium fittings. This provides increased fuel volume while maintaining the added protection of secondary filtration.
Everything mounts neatly beneath the intake manifold for a clean, factory-style appearance while keeping routine filter changes quick and convenient.
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. For trucks equipped with an engine-mounted APPS or most aftermarket intake manifolds, Glacier offers an APPS-specific version.
Kit Contents
The Glacier Diesel Power MK-2+ Kit includes:
- Fleetguard FF5320 fuel filter
- MK-2 mounting bracket
- Glacier 3/8-inch Big Line Kit
- High-flow fuel hose and fittings
- Mounting hardware
- Installation components
Important Notes
- Fits 2003–2007 5.9L Common Rail Cummins.
- Designed for trucks without an engine-mounted APPS.
- Compatible with stock intake manifolds and Glacier Power-Flo intake manifolds.
- No permanent modifications required.
- Prime the fuel system after installation.
- Inspect all fuel connections for leaks before operating the engine.
Common Failure Point
The factory supply line between the fuel filter housing and CP3 is one of the more restrictive sections of the factory fuel system. As fuel demand increases, restriction can limit fuel delivery while fine contaminants continue toward the injection pump.
The MK-2+ addresses both concerns by combining high-flow fuel plumbing with secondary filtration, helping maintain proper fuel delivery while providing additional protection for the CP3 and injectors.
Complete Your Fuel System
Complete your Common Rail fuel system with:
- Glacier Fuel Boss Mechanical Lift Pump
- Glacier Fuel Pressure Gauge and Sender
- Glacier Fuel Pressure Test Fittings
- Glacier Fuel Tank Vent Kit
- Replacement Fleetguard FF5320 Fuel Filters
- Glacier Big Line Accessories
- Glacier Fuel Return Line Upgrades