Glacier Diesel Power 1998.5–2002 Dodge Ram 5.9L Cummins 1/2" Big Line Kit (9852BLK-500)
Description
The VP44 injection pump depends on a steady supply of clean fuel delivered with as little restriction as possible. Unfortunately, the factory hard line between the fuel filter housing and the injection pump is one of the smallest sections of the original fuel supply system.
The Glacier Diesel Power 1/2" Big Line Kit replaces the factory hard line and restrictive banjo-style connections with a full 1/2-inch fuel supply hose, custom stainless-steel adapters, and heavy-duty Push-Lok fittings. This creates a larger, more direct fuel path between the factory fuel filter housing and the VP44 injection pump.
Designed for trucks with higher fuel-flow requirements, this 1/2-inch version is an excellent addition to Glacier GFS Performance Fuel Systems and other upgraded lift-pump configurations. It is especially well suited for owners building a complete high-volume fuel system rather than simply replacing one section of factory plumbing.
The kit retains the factory fuel filter housing while replacing the restrictive outlet plumbing leading to the injection pump. It also includes a billet aluminum sender tee, allowing a fuel-pressure sender to be installed cleanly without stacking together multiple adapters.
Whether you are upgrading an existing performance fuel system or replacing decades-old factory plumbing, the Glacier 1/2" Big Line Kit provides the components needed to build a larger, cleaner, and more serviceable fuel path to the VP44.
Features
- Fits 1998.5–2002 Dodge Ram 2500 and 3500 trucks with the 5.9L Cummins
- Designed for VP44-equipped engines
- Replaces the factory hard line from the fuel filter housing to the injection pump
- Full 1/2-inch fuel supply hose
- Eliminates the restrictive factory banjo-style connections
- Custom stainless-steel fuel system adapters
- Heavy-duty 90-degree Push-Lok fittings
- Billet aluminum fuel-pressure sender tee
- Cummins sealing washers included
- Hose clamps and installation hardware included
- Retains the factory fuel filter housing
- Excellent addition to Glacier GFS Performance Fuel Systems
Why Upgrade to a 1/2" Big Line?
The original hard line between the fuel filter housing and VP44 measures less than 1/4 inch in diameter. Even when a larger lift pump or upgraded fuel supply system is installed, fuel must still pass through this undersized section before reaching the injection pump.
Replacing that section with a full 1/2-inch line helps create a more consistent fuel-path diameter between the filter housing and the VP44. It also removes the factory banjo-style connections, which can introduce additional restriction at the inlet and outlet of the original hard line.
This does not mean every VP44 truck requires a 1/2-inch line. The larger version is intended for systems where increased fuel-delivery capacity and compatibility with other 1/2-inch plumbing are priorities. For stock and mildly modified trucks, Glacier’s 3/8-inch Big Line Kit may be the more appropriate choice.
For trucks equipped with a higher-output lift pump, larger supply plumbing, or a complete Glacier performance fuel system, the 1/2-inch kit helps prevent the final section between the filter and injection pump from remaining the smallest part of the system.
Glacier Fuel System Tech Tip
A larger fuel line does not create fuel pressure by itself. Fuel pressure is produced by the lift pump and influenced by filter condition, hose routing, fitting size, fuel demand, and the condition of the complete supply system.
The purpose of the Big Line Kit is to remove an unnecessary restriction between the fuel filter housing and the VP44. The actual pressure change will vary from truck to truck depending on the rest of the fuel system.
That is why monitoring pressure at the injection-pump inlet is so valuable. The included billet sender tee provides a clean location for installing a compatible fuel-pressure sender, allowing you to watch how the system performs during idle, acceleration, towing, and higher engine load.
Why Glacier Built It This Way
We did not want to offer a larger hose connected to the same restrictive factory fittings. The entire section needed to be addressed as a system.
Custom stainless-steel adapters replace the original banjo-style connections at the fuel filter housing and VP44. The adapters transition directly into full-size 1/2-inch Push-Lok plumbing, creating a cleaner path without reducing the system back down at the connection points.
Stainless steel was selected for the adapters because it provides excellent strength, corrosion resistance, and long-term durability in a diesel fuel system. The included Cummins sealing washers provide the correct sealing surfaces at the factory connection points.
The 90-degree Push-Lok fittings help the larger hose route cleanly through the engine compartment while avoiding sharp bends that could kink or place unnecessary strain on the connections.
We also include a billet aluminum sender tee because fuel pressure should be monitored on a VP44-equipped truck. Integrating that provision into the kit creates a cleaner installation than assembling several generic pipe fittings and adapters.
The result is a complete upgrade engineered around flow capacity, durable connections, proper routing, and long-term serviceability.
1/2" Versus 3/8" Big Line Kit
Both Glacier Big Line Kits eliminate the restrictive factory hard line and banjo-style connections between the fuel filter housing and the VP44. The correct version depends on the rest of the truck’s fuel system.
Choose the 3/8" Big Line Kit When:
- The truck is stock or mildly modified
- You want to replace the restrictive factory hard line
- The rest of the fuel system primarily uses 3/8-inch plumbing
- Maximum fuel volume is not the primary goal
- You want a straightforward upgrade for a factory-style or moderate-output system
Choose the 1/2" Big Line Kit When:
- The truck has an upgraded high-output lift pump
- The existing fuel system already uses 1/2-inch plumbing
- You are installing a Glacier GFS Performance Fuel System
- The engine has higher-than-stock fuel demand
- You want the largest available Glacier line between the filter housing and VP44
Using a 1/2-inch Big Line Kit with an otherwise completely stock supply system may provide limited additional benefit over the 3/8-inch version. The larger kit makes the most sense when it complements the diameter and capacity of the rest of the fuel system.
Applications and Fitment
Designed for:
- 1998.5 Dodge Ram 2500 5.9L Cummins
- 1998.5 Dodge Ram 3500 5.9L Cummins
- 1999 Dodge Ram 2500 5.9L Cummins
- 1999 Dodge Ram 3500 5.9L Cummins
- 2000 Dodge Ram 2500 5.9L Cummins
- 2000 Dodge Ram 3500 5.9L Cummins
- 2001 Dodge Ram 2500 5.9L Cummins
- 2001 Dodge Ram 3500 5.9L Cummins
- 2002 Dodge Ram 2500 5.9L Cummins
- 2002 Dodge Ram 3500 5.9L Cummins
This kit is specifically designed for trucks equipped with the Bosch VP44 injection pump and retaining the factory-style fuel filter housing.
Kit Contents
The Glacier Diesel Power 1/2" Big Line Kit includes:
- Custom stainless-steel fuel filter housing adapter
- Custom stainless-steel VP44 inlet adapter
- Two heavy-duty 90-degree Push-Lok fittings
- Full 1/2-inch fuel hose
- Cummins sealing washers
- Fuel hose clamps
- Billet aluminum fuel-pressure sender tee
The fuel-pressure gauge, wiring, and pressure sender are not included unless otherwise selected or stated on the product page.
Important Notes
- This kit replaces only the line between the fuel filter housing and VP44 injection pump.
- It does not replace the complete fuel system from the tank forward.
- Designed for trucks retaining the factory-style fuel filter housing.
- A properly operating lift pump is still required.
- The kit will not correct a failing lift pump, restricted fuel filter, damaged tank module, or other fuel-system fault.
- Fuel-pressure results will vary based on the complete system configuration.
- Verify that your existing lift pump and plumbing are compatible with 1/2-inch fuel hose.
- Route the hose away from exhaust components, sharp edges, steering components, and moving parts.
- Check all connections for leakage after installation and again after the first complete heat cycle.
- Fuel-pressure sender and gauge are sold separately unless otherwise specified.
Common Failure Point
The VP44 injection pump relies on supply fuel for both lubrication and cooling. When lift-pump performance deteriorates or the supply system becomes restricted, the injection pump may not receive the fuel volume and pressure it needs under load.
On many 1998.5–2002 trucks, the original hard line, banjo fittings, sealing washers, and related plumbing have now been in service for more than two decades. Corrosion, contamination, damaged sealing surfaces, aging components, and partially restricted fittings can all affect the condition of the supply system.
Replacing the factory hard line removes one known restriction, but the rest of the system must still be inspected. A clogged fuel filter, weak lift pump, deteriorated tank pickup, leaking hose, or restricted fitting elsewhere in the system can continue causing low fuel pressure even after installing a larger line.
The best approach is to treat the fuel system as a complete assembly rather than expecting one component to compensate for problems elsewhere.
Installation Overview
Installation requires removing the factory hard line and banjo-style fittings between the fuel filter housing and VP44 injection pump.
The Glacier stainless-steel adapters are installed using the supplied Cummins sealing washers. The 1/2-inch Push-Lok hose is then measured, routed, and connected using the supplied fittings and clamps.
Before starting the engine, prime the fuel system according to the lift-pump manufacturer’s procedure. Inspect every connection carefully while the system is pressurized. After the engine has reached operating temperature and cooled completely, inspect the fittings again and verify that the hose has not shifted or contacted any hot or moving components.
Because diesel fuel systems must remain clean, cap or cover all open fittings during installation. Even a small amount of dirt introduced during service can be carried toward the injection pump.
Complete Your VP44 Fuel System
Complete your Glacier Diesel Power fuel system with:
- Glacier Fuel Boss Mechanical Lift Pump
- Glacier GFS Performance Fuel System
- Glacier MK-7 Fuel Filter System
- Glacier MK-10 Fuel Filter System
- Fuel-pressure gauge and sender
- Fuel-pressure test fittings
- Replacement Fleetguard fuel filters
- Glacier stainless-steel fuel system adapters
- Fuel filter housing upgrades
The 1/2-inch version should be positioned as the high-volume option, while the 3/8-inch kit remains the general-purpose upgrade. That gives each product a clear reason to exist and helps customers select the correct kit rather than assuming that the largest hose is automatically best for every truck.
Glacier Diesel Power 1998.5–2002 Dodge Ram 5.9L Cummins 1/2" Big Line Kit (9852BLK-500)
Description
The VP44 injection pump depends on a steady supply of clean fuel delivered with as little restriction as possible. Unfortunately, the factory hard line between the fuel filter housing and the injection pump is one of the smallest sections of the original fuel supply system.
The Glacier Diesel Power 1/2" Big Line Kit replaces the factory hard line and restrictive banjo-style connections with a full 1/2-inch fuel supply hose, custom stainless-steel adapters, and heavy-duty Push-Lok fittings. This creates a larger, more direct fuel path between the factory fuel filter housing and the VP44 injection pump.
Designed for trucks with higher fuel-flow requirements, this 1/2-inch version is an excellent addition to Glacier GFS Performance Fuel Systems and other upgraded lift-pump configurations. It is especially well suited for owners building a complete high-volume fuel system rather than simply replacing one section of factory plumbing.
The kit retains the factory fuel filter housing while replacing the restrictive outlet plumbing leading to the injection pump. It also includes a billet aluminum sender tee, allowing a fuel-pressure sender to be installed cleanly without stacking together multiple adapters.
Whether you are upgrading an existing performance fuel system or replacing decades-old factory plumbing, the Glacier 1/2" Big Line Kit provides the components needed to build a larger, cleaner, and more serviceable fuel path to the VP44.
Features
- Fits 1998.5–2002 Dodge Ram 2500 and 3500 trucks with the 5.9L Cummins
- Designed for VP44-equipped engines
- Replaces the factory hard line from the fuel filter housing to the injection pump
- Full 1/2-inch fuel supply hose
- Eliminates the restrictive factory banjo-style connections
- Custom stainless-steel fuel system adapters
- Heavy-duty 90-degree Push-Lok fittings
- Billet aluminum fuel-pressure sender tee
- Cummins sealing washers included
- Hose clamps and installation hardware included
- Retains the factory fuel filter housing
- Excellent addition to Glacier GFS Performance Fuel Systems
Why Upgrade to a 1/2" Big Line?
The original hard line between the fuel filter housing and VP44 measures less than 1/4 inch in diameter. Even when a larger lift pump or upgraded fuel supply system is installed, fuel must still pass through this undersized section before reaching the injection pump.
Replacing that section with a full 1/2-inch line helps create a more consistent fuel-path diameter between the filter housing and the VP44. It also removes the factory banjo-style connections, which can introduce additional restriction at the inlet and outlet of the original hard line.
This does not mean every VP44 truck requires a 1/2-inch line. The larger version is intended for systems where increased fuel-delivery capacity and compatibility with other 1/2-inch plumbing are priorities. For stock and mildly modified trucks, Glacier’s 3/8-inch Big Line Kit may be the more appropriate choice.
For trucks equipped with a higher-output lift pump, larger supply plumbing, or a complete Glacier performance fuel system, the 1/2-inch kit helps prevent the final section between the filter and injection pump from remaining the smallest part of the system.
Glacier Fuel System Tech Tip
A larger fuel line does not create fuel pressure by itself. Fuel pressure is produced by the lift pump and influenced by filter condition, hose routing, fitting size, fuel demand, and the condition of the complete supply system.
The purpose of the Big Line Kit is to remove an unnecessary restriction between the fuel filter housing and the VP44. The actual pressure change will vary from truck to truck depending on the rest of the fuel system.
That is why monitoring pressure at the injection-pump inlet is so valuable. The included billet sender tee provides a clean location for installing a compatible fuel-pressure sender, allowing you to watch how the system performs during idle, acceleration, towing, and higher engine load.
Why Glacier Built It This Way
We did not want to offer a larger hose connected to the same restrictive factory fittings. The entire section needed to be addressed as a system.
Custom stainless-steel adapters replace the original banjo-style connections at the fuel filter housing and VP44. The adapters transition directly into full-size 1/2-inch Push-Lok plumbing, creating a cleaner path without reducing the system back down at the connection points.
Stainless steel was selected for the adapters because it provides excellent strength, corrosion resistance, and long-term durability in a diesel fuel system. The included Cummins sealing washers provide the correct sealing surfaces at the factory connection points.
The 90-degree Push-Lok fittings help the larger hose route cleanly through the engine compartment while avoiding sharp bends that could kink or place unnecessary strain on the connections.
We also include a billet aluminum sender tee because fuel pressure should be monitored on a VP44-equipped truck. Integrating that provision into the kit creates a cleaner installation than assembling several generic pipe fittings and adapters.
The result is a complete upgrade engineered around flow capacity, durable connections, proper routing, and long-term serviceability.
1/2" Versus 3/8" Big Line Kit
Both Glacier Big Line Kits eliminate the restrictive factory hard line and banjo-style connections between the fuel filter housing and the VP44. The correct version depends on the rest of the truck’s fuel system.
Choose the 3/8" Big Line Kit When:
- The truck is stock or mildly modified
- You want to replace the restrictive factory hard line
- The rest of the fuel system primarily uses 3/8-inch plumbing
- Maximum fuel volume is not the primary goal
- You want a straightforward upgrade for a factory-style or moderate-output system
Choose the 1/2" Big Line Kit When:
- The truck has an upgraded high-output lift pump
- The existing fuel system already uses 1/2-inch plumbing
- You are installing a Glacier GFS Performance Fuel System
- The engine has higher-than-stock fuel demand
- You want the largest available Glacier line between the filter housing and VP44
Using a 1/2-inch Big Line Kit with an otherwise completely stock supply system may provide limited additional benefit over the 3/8-inch version. The larger kit makes the most sense when it complements the diameter and capacity of the rest of the fuel system.
Applications and Fitment
Designed for:
- 1998.5 Dodge Ram 2500 5.9L Cummins
- 1998.5 Dodge Ram 3500 5.9L Cummins
- 1999 Dodge Ram 2500 5.9L Cummins
- 1999 Dodge Ram 3500 5.9L Cummins
- 2000 Dodge Ram 2500 5.9L Cummins
- 2000 Dodge Ram 3500 5.9L Cummins
- 2001 Dodge Ram 2500 5.9L Cummins
- 2001 Dodge Ram 3500 5.9L Cummins
- 2002 Dodge Ram 2500 5.9L Cummins
- 2002 Dodge Ram 3500 5.9L Cummins
This kit is specifically designed for trucks equipped with the Bosch VP44 injection pump and retaining the factory-style fuel filter housing.
Kit Contents
The Glacier Diesel Power 1/2" Big Line Kit includes:
- Custom stainless-steel fuel filter housing adapter
- Custom stainless-steel VP44 inlet adapter
- Two heavy-duty 90-degree Push-Lok fittings
- Full 1/2-inch fuel hose
- Cummins sealing washers
- Fuel hose clamps
- Billet aluminum fuel-pressure sender tee
The fuel-pressure gauge, wiring, and pressure sender are not included unless otherwise selected or stated on the product page.
Important Notes
- This kit replaces only the line between the fuel filter housing and VP44 injection pump.
- It does not replace the complete fuel system from the tank forward.
- Designed for trucks retaining the factory-style fuel filter housing.
- A properly operating lift pump is still required.
- The kit will not correct a failing lift pump, restricted fuel filter, damaged tank module, or other fuel-system fault.
- Fuel-pressure results will vary based on the complete system configuration.
- Verify that your existing lift pump and plumbing are compatible with 1/2-inch fuel hose.
- Route the hose away from exhaust components, sharp edges, steering components, and moving parts.
- Check all connections for leakage after installation and again after the first complete heat cycle.
- Fuel-pressure sender and gauge are sold separately unless otherwise specified.
Common Failure Point
The VP44 injection pump relies on supply fuel for both lubrication and cooling. When lift-pump performance deteriorates or the supply system becomes restricted, the injection pump may not receive the fuel volume and pressure it needs under load.
On many 1998.5–2002 trucks, the original hard line, banjo fittings, sealing washers, and related plumbing have now been in service for more than two decades. Corrosion, contamination, damaged sealing surfaces, aging components, and partially restricted fittings can all affect the condition of the supply system.
Replacing the factory hard line removes one known restriction, but the rest of the system must still be inspected. A clogged fuel filter, weak lift pump, deteriorated tank pickup, leaking hose, or restricted fitting elsewhere in the system can continue causing low fuel pressure even after installing a larger line.
The best approach is to treat the fuel system as a complete assembly rather than expecting one component to compensate for problems elsewhere.
Installation Overview
Installation requires removing the factory hard line and banjo-style fittings between the fuel filter housing and VP44 injection pump.
The Glacier stainless-steel adapters are installed using the supplied Cummins sealing washers. The 1/2-inch Push-Lok hose is then measured, routed, and connected using the supplied fittings and clamps.
Before starting the engine, prime the fuel system according to the lift-pump manufacturer’s procedure. Inspect every connection carefully while the system is pressurized. After the engine has reached operating temperature and cooled completely, inspect the fittings again and verify that the hose has not shifted or contacted any hot or moving components.
Because diesel fuel systems must remain clean, cap or cover all open fittings during installation. Even a small amount of dirt introduced during service can be carried toward the injection pump.
Complete Your VP44 Fuel System
Complete your Glacier Diesel Power fuel system with:
- Glacier Fuel Boss Mechanical Lift Pump
- Glacier GFS Performance Fuel System
- Glacier MK-7 Fuel Filter System
- Glacier MK-10 Fuel Filter System
- Fuel-pressure gauge and sender
- Fuel-pressure test fittings
- Replacement Fleetguard fuel filters
- Glacier stainless-steel fuel system adapters
- Fuel filter housing upgrades
The 1/2-inch version should be positioned as the high-volume option, while the 3/8-inch kit remains the general-purpose upgrade. That gives each product a clear reason to exist and helps customers select the correct kit rather than assuming that the largest hose is automatically best for every truck.