Glacier Diesel Power 1998.5–2002 & 2005–2009 Dodge Ram 5.9L / 6.7L Cummins Max-Flo Fuel Filter Inlet Kit (9852-0509-FIK)
Description
Every restriction in your fuel system costs fuel flow.
While many owners upgrade the line from the fuel filter to the injection pump, one of the last remaining bottlenecks is often overlooked—the restrictive factory banjo fitting and small plastic fuel line feeding the fuel filter housing.
The Glacier Diesel Power Max-Flo Filter Inlet Kit eliminates this restriction by replacing the factory inlet fitting with a custom high-flow stainless steel metric adapter, premium 3/8-inch fuel hose, and quality Push-Lok fittings. The result is a smoother, less restrictive path from the frame rail to the fuel filter housing, allowing your lift pump to deliver fuel more efficiently.
Whether you're running a stock in-tank lift pump or an upgraded fuel system, the Max-Flo Filter Inlet Kit is an excellent finishing touch to maximize the performance of your existing fuel plumbing.
Features
- Fits 1998.5–2002 5.9L Cummins with factory in-tank lift pump
- Fits 2005–2009 5.9L & 6.7L Cummins with in-tank lift pumps
- Replaces the final restrictive banjo fitting at the fuel filter inlet
- Eliminates the restrictive factory plastic inlet line
- High-flow stainless steel metric adapter
- Premium 3/8-inch fuel hose
- High-quality 90° Push-Lok fitting
- Simple bolt-on installation
- Excellent addition to Glacier Big Line Kits
- Designed and manufactured by Glacier Diesel Power
Why Upgrade to the Max-Flo Filter Inlet Kit?
Many fuel-system upgrades improve the plumbing after the fuel filter housing but leave the filter inlet untouched.
That means fuel still has to pass through a restrictive banjo fitting and undersized plastic line before it even reaches the filter.
The Max-Flo Filter Inlet Kit addresses that remaining restriction by upgrading the inlet side of the fuel filter housing with larger, higher-flow components.
Benefits include:
- Reduced inlet restriction
- Increased fuel volume to the filter housing
- Improved fuel delivery from the lift pump
- Complements existing Big Line Kits and aftermarket lift pumps
- Simple, affordable performance upgrade
Glacier Fuel System Tech Tip
A fuel system is only as efficient as its most restrictive component.
Even after installing larger supply lines, a small banjo fitting or restrictive plastic line can still create unnecessary pressure loss before fuel reaches the filter housing. By upgrading the filter inlet, the Max-Flo Kit helps maintain consistent fuel flow throughout the entire low-pressure side of the fuel system.
Why Glacier Built It This Way
Instead of modifying factory fittings or using drilled-out hydraulic adapters, Glacier engineered a purpose-built solution.
The Max-Flo Kit uses a custom high-flow stainless steel metric adapter, premium 3/8-inch fuel hose, and quality Push-Lok fittings to create a larger, smoother fuel path into the filter housing. It's a simple upgrade that complements Glacier Big Line Kits, Fuel Boss systems, and other performance fuel system components while maintaining a clean OEM-style installation.
Applications
Fits:
- 1998.5 Dodge Ram 2500 & 3500 5.9L Cummins (factory in-tank lift pump)
- 1999 Dodge Ram 2500 & 3500 5.9L Cummins (factory in-tank lift pump)
- 2000 Dodge Ram 2500 & 3500 5.9L Cummins (factory in-tank lift pump)
- 2001 Dodge Ram 2500 & 3500 5.9L Cummins (factory in-tank lift pump)
- 2002 Dodge Ram 2500 & 3500 5.9L Cummins (factory in-tank lift pump)
- 2005 Dodge Ram 2500 & 3500 5.9L Cummins
- 2006 Dodge Ram 2500 & 3500 5.9L Cummins
- 2007 Dodge Ram 2500 & 3500 5.9L Cummins
- 2007.5 Dodge Ram 2500 & 3500 6.7L Cummins
- 2008 Dodge Ram 2500 & 3500 6.7L Cummins
- 2009 Dodge Ram 2500 & 3500 6.7L Cummins
Important: Fits trucks equipped with factory in-tank lift pumps only. Does NOT fit 2003–2004 applications.
Kit Contents
The Glacier Diesel Power Max-Flo Filter Inlet Kit includes:
- High-flow stainless steel metric adapter
- 90° Push-Lok fitting
- Premium 3/8-inch fuel hose
- Hose clamps
- Installation hardware
Important Notes
- Fits 1998.5–2002 and 2005–2009 Cummins applications with factory in-tank lift pumps.
- Does not fit 2003–2004 applications.
- Upgrades the inlet side of the factory fuel filter housing.
- Excellent addition to Glacier Big Line Kits and Fuel Boss systems.
- Inspect all fuel connections for leaks after installation.
- Recheck fittings after the first complete heat cycle.
Common Failure Point
Many owners focus on upgrading the plumbing after the fuel filter while overlooking the restriction at the filter inlet itself. The factory banjo fitting and small plastic supply line can still limit fuel volume before it reaches the filter housing.
The Max-Flo Filter Inlet Kit removes that final bottleneck, allowing the lift pump to supply fuel through a larger, less restrictive path. While it won't compensate for a weak lift pump or plugged fuel filter, it helps eliminate one of the last remaining factory restrictions in the low-pressure fuel system.
Complete Your Fuel System
Complete your fuel system with:
- Glacier Fuel Boss Mechanical Lift Pump
- Glacier Big Line Kits
- Glacier Maximizer Fuel System
- Glacier MK-Series Fuel Filter Systems
- Glacier Fuel Pressure Gauge and Sender
- Glacier Fuel Pressure Test Fittings
- Glacier Fuel Tank Vent Kit
Glacier Diesel Power 1998.5–2002 & 2005–2009 Dodge Ram 5.9L / 6.7L Cummins Max-Flo Fuel Filter Inlet Kit (9852-0509-FIK)
Description
Every restriction in your fuel system costs fuel flow.
While many owners upgrade the line from the fuel filter to the injection pump, one of the last remaining bottlenecks is often overlooked—the restrictive factory banjo fitting and small plastic fuel line feeding the fuel filter housing.
The Glacier Diesel Power Max-Flo Filter Inlet Kit eliminates this restriction by replacing the factory inlet fitting with a custom high-flow stainless steel metric adapter, premium 3/8-inch fuel hose, and quality Push-Lok fittings. The result is a smoother, less restrictive path from the frame rail to the fuel filter housing, allowing your lift pump to deliver fuel more efficiently.
Whether you're running a stock in-tank lift pump or an upgraded fuel system, the Max-Flo Filter Inlet Kit is an excellent finishing touch to maximize the performance of your existing fuel plumbing.
Features
- Fits 1998.5–2002 5.9L Cummins with factory in-tank lift pump
- Fits 2005–2009 5.9L & 6.7L Cummins with in-tank lift pumps
- Replaces the final restrictive banjo fitting at the fuel filter inlet
- Eliminates the restrictive factory plastic inlet line
- High-flow stainless steel metric adapter
- Premium 3/8-inch fuel hose
- High-quality 90° Push-Lok fitting
- Simple bolt-on installation
- Excellent addition to Glacier Big Line Kits
- Designed and manufactured by Glacier Diesel Power
Why Upgrade to the Max-Flo Filter Inlet Kit?
Many fuel-system upgrades improve the plumbing after the fuel filter housing but leave the filter inlet untouched.
That means fuel still has to pass through a restrictive banjo fitting and undersized plastic line before it even reaches the filter.
The Max-Flo Filter Inlet Kit addresses that remaining restriction by upgrading the inlet side of the fuel filter housing with larger, higher-flow components.
Benefits include:
- Reduced inlet restriction
- Increased fuel volume to the filter housing
- Improved fuel delivery from the lift pump
- Complements existing Big Line Kits and aftermarket lift pumps
- Simple, affordable performance upgrade
Glacier Fuel System Tech Tip
A fuel system is only as efficient as its most restrictive component.
Even after installing larger supply lines, a small banjo fitting or restrictive plastic line can still create unnecessary pressure loss before fuel reaches the filter housing. By upgrading the filter inlet, the Max-Flo Kit helps maintain consistent fuel flow throughout the entire low-pressure side of the fuel system.
Why Glacier Built It This Way
Instead of modifying factory fittings or using drilled-out hydraulic adapters, Glacier engineered a purpose-built solution.
The Max-Flo Kit uses a custom high-flow stainless steel metric adapter, premium 3/8-inch fuel hose, and quality Push-Lok fittings to create a larger, smoother fuel path into the filter housing. It's a simple upgrade that complements Glacier Big Line Kits, Fuel Boss systems, and other performance fuel system components while maintaining a clean OEM-style installation.
Applications
Fits:
- 1998.5 Dodge Ram 2500 & 3500 5.9L Cummins (factory in-tank lift pump)
- 1999 Dodge Ram 2500 & 3500 5.9L Cummins (factory in-tank lift pump)
- 2000 Dodge Ram 2500 & 3500 5.9L Cummins (factory in-tank lift pump)
- 2001 Dodge Ram 2500 & 3500 5.9L Cummins (factory in-tank lift pump)
- 2002 Dodge Ram 2500 & 3500 5.9L Cummins (factory in-tank lift pump)
- 2005 Dodge Ram 2500 & 3500 5.9L Cummins
- 2006 Dodge Ram 2500 & 3500 5.9L Cummins
- 2007 Dodge Ram 2500 & 3500 5.9L Cummins
- 2007.5 Dodge Ram 2500 & 3500 6.7L Cummins
- 2008 Dodge Ram 2500 & 3500 6.7L Cummins
- 2009 Dodge Ram 2500 & 3500 6.7L Cummins
Important: Fits trucks equipped with factory in-tank lift pumps only. Does NOT fit 2003–2004 applications.
Kit Contents
The Glacier Diesel Power Max-Flo Filter Inlet Kit includes:
- High-flow stainless steel metric adapter
- 90° Push-Lok fitting
- Premium 3/8-inch fuel hose
- Hose clamps
- Installation hardware
Important Notes
- Fits 1998.5–2002 and 2005–2009 Cummins applications with factory in-tank lift pumps.
- Does not fit 2003–2004 applications.
- Upgrades the inlet side of the factory fuel filter housing.
- Excellent addition to Glacier Big Line Kits and Fuel Boss systems.
- Inspect all fuel connections for leaks after installation.
- Recheck fittings after the first complete heat cycle.
Common Failure Point
Many owners focus on upgrading the plumbing after the fuel filter while overlooking the restriction at the filter inlet itself. The factory banjo fitting and small plastic supply line can still limit fuel volume before it reaches the filter housing.
The Max-Flo Filter Inlet Kit removes that final bottleneck, allowing the lift pump to supply fuel through a larger, less restrictive path. While it won't compensate for a weak lift pump or plugged fuel filter, it helps eliminate one of the last remaining factory restrictions in the low-pressure fuel system.
Complete Your Fuel System
Complete your fuel system with:
- Glacier Fuel Boss Mechanical Lift Pump
- Glacier Big Line Kits
- Glacier Maximizer Fuel System
- Glacier MK-Series Fuel Filter Systems
- Glacier Fuel Pressure Gauge and Sender
- Glacier Fuel Pressure Test Fittings
- Glacier Fuel Tank Vent Kit