Glacier Diesel Power Universal Twin Fuel Filter Kit – Fleetguard FS1212 & FF5320 5-Micron Fuel Filter (FW1220-TFK)
Description
Building a custom diesel fuel system starts with proper filtration. The Glacier Diesel Power Universal Twin Fuel Filter Kit combines a Fleetguard FS1212 20-micron fuel/water separator with a Fleetguard FF5320 5-micron fuel filter to provide dependable two-stage filtration in one compact, easy-to-service package.
Designed for custom fuel systems, this kit is an excellent choice for Cummins-powered Dodge Rams, custom lift pump installations, transfer tanks, slip tanks, farm equipment, generators, fleet vehicles, and industrial diesel applications. The FS1212 removes water and larger contaminants before fuel reaches the FF5320, which provides final-stage filtration before the injection system.
Complete with Glacier's heavy-duty universal frame bracket, mounting hardware, and your choice of 3/8-inch or 1/2-inch Push-Lok fittings, this kit makes building a reliable diesel fuel system simple.
Features
- Universal twin-filter diesel fuel system
- Genuine Fleetguard FS1212 20-micron fuel/water separator
- Genuine Fleetguard FF5320 5-micron fuel filter
- Two-stage fuel filtration
- Removes water before final filtration
- Heavy-duty Glacier universal mounting bracket
- Choice of 3/8-inch or 1/2-inch Push-Lok fittings
- Complete mounting hardware included
- Replaceable spin-on filters
- Excellent for custom diesel fuel systems, transfer tanks, generators, and fleet applications
Why Choose a Twin Filter System?
Each filter performs a different job.
The FS1212 serves as the primary filter by removing larger debris and separating water before it can reach sensitive fuel-system components.
The FF5320 then provides finer filtration, helping protect the lift pump, injection pump, and fuel injectors from damaging particulate contamination.
Using two filters instead of one helps improve overall filtration efficiency while extending the service life of the final filter.
Glacier Fuel System Tech Tip
For most custom diesel fuel systems, staged filtration is the best approach.
A typical layout is:
- Fuel tank
- FS1212 fuel/water separator
- Lift pump
- FF5320 fuel filter
- Injection pump
By removing water and larger contaminants first, the FF5320 can focus on finer filtration instead of becoming overloaded with debris.
Why Glacier Built It This Way
Glacier designed this kit to provide excellent filtration without unnecessary complexity.
The universal mounting bracket securely holds both filters together while making routine service quick and convenient. Customers can choose either 3/8-inch or 1/2-inch Push-Lok fittings to match their existing plumbing, making the system adaptable to a wide variety of diesel applications.
Whether you're replacing a factory filter housing or building a fuel system from scratch, this kit provides a clean, professional installation using proven Fleetguard filtration components.
Universal Applications
Ideal for:
- Custom Cummins fuel systems
- Dodge Ram factory filter bypass systems
- Custom lift pump installations
- Diesel pickup trucks
- Agricultural equipment
- Construction equipment
- Diesel generators
- Transfer tanks
- Slip tanks
- Farm fuel storage
- Fleet service vehicles
- Industrial diesel equipment
Compatibility depends on the fuel-system layout, operating pressure, hose size, and available mounting space.
Kit Contents
The Glacier Diesel Power Universal Twin Fuel Filter Kit includes:
- Fleetguard FS1212 Fuel/Water Separator
- Fleetguard FF5320 Fuel Filter
- Glacier universal twin-filter mounting bracket
- Mounting hardware
- Choice of 3/8-inch or 1/2-inch Push-Lok fittings
Fuel hose, lift pump, shutoff valves, pressure gauges, and additional adapters are sold separately unless otherwise specified.
Important Notes
- Universal installation kit.
- Designed for diesel fuel systems.
- Verify fuel-flow direction before installation.
- Confirm the selected fittings match your fuel hose size.
- Mount the assembly where both filters remain accessible for routine maintenance.
- Drain accumulated water from the FS1212 regularly.
- Prime the fuel system after installation.
- Inspect all fuel connections for leaks before placing the system into service.
- Replace filters according to service interval, fuel quality, or restriction.
Common Failure Point
Contamination entering from transfer tanks, bulk storage tanks, or poor-quality fuel can shorten the life of expensive fuel-system components.
Using a dedicated fuel/water separator ahead of the final fuel filter helps reduce the amount of water and larger debris reaching the secondary filter. Regularly draining the separator and replacing both filters at the recommended intervals will help maintain proper fuel flow and protect downstream components.
If filters require replacement unusually often, inspect the fuel source, storage tank, and transfer equipment for contamination instead of simply replacing the elements.
Complete Your Fuel System
Complete your custom diesel fuel system with:
- Glacier Fuel Boss Mechanical Lift Pump
- Glacier Fuel Pressure Gauge and Sender
- Glacier Fuel Pressure Test Fittings
- Push-Lok Fuel Hose
- Replacement Fleetguard FS1212 Fuel/Water Separators
- Replacement Fleetguard FF5320 Fuel Filters
- Glacier Big Line Kits
Glacier Diesel Power Universal Twin Fuel Filter Kit – Fleetguard FS1212 & FF5320 5-Micron Fuel Filter (FW1220-TFK)
Description
Building a custom diesel fuel system starts with proper filtration. The Glacier Diesel Power Universal Twin Fuel Filter Kit combines a Fleetguard FS1212 20-micron fuel/water separator with a Fleetguard FF5320 5-micron fuel filter to provide dependable two-stage filtration in one compact, easy-to-service package.
Designed for custom fuel systems, this kit is an excellent choice for Cummins-powered Dodge Rams, custom lift pump installations, transfer tanks, slip tanks, farm equipment, generators, fleet vehicles, and industrial diesel applications. The FS1212 removes water and larger contaminants before fuel reaches the FF5320, which provides final-stage filtration before the injection system.
Complete with Glacier's heavy-duty universal frame bracket, mounting hardware, and your choice of 3/8-inch or 1/2-inch Push-Lok fittings, this kit makes building a reliable diesel fuel system simple.
Features
- Universal twin-filter diesel fuel system
- Genuine Fleetguard FS1212 20-micron fuel/water separator
- Genuine Fleetguard FF5320 5-micron fuel filter
- Two-stage fuel filtration
- Removes water before final filtration
- Heavy-duty Glacier universal mounting bracket
- Choice of 3/8-inch or 1/2-inch Push-Lok fittings
- Complete mounting hardware included
- Replaceable spin-on filters
- Excellent for custom diesel fuel systems, transfer tanks, generators, and fleet applications
Why Choose a Twin Filter System?
Each filter performs a different job.
The FS1212 serves as the primary filter by removing larger debris and separating water before it can reach sensitive fuel-system components.
The FF5320 then provides finer filtration, helping protect the lift pump, injection pump, and fuel injectors from damaging particulate contamination.
Using two filters instead of one helps improve overall filtration efficiency while extending the service life of the final filter.
Glacier Fuel System Tech Tip
For most custom diesel fuel systems, staged filtration is the best approach.
A typical layout is:
- Fuel tank
- FS1212 fuel/water separator
- Lift pump
- FF5320 fuel filter
- Injection pump
By removing water and larger contaminants first, the FF5320 can focus on finer filtration instead of becoming overloaded with debris.
Why Glacier Built It This Way
Glacier designed this kit to provide excellent filtration without unnecessary complexity.
The universal mounting bracket securely holds both filters together while making routine service quick and convenient. Customers can choose either 3/8-inch or 1/2-inch Push-Lok fittings to match their existing plumbing, making the system adaptable to a wide variety of diesel applications.
Whether you're replacing a factory filter housing or building a fuel system from scratch, this kit provides a clean, professional installation using proven Fleetguard filtration components.
Universal Applications
Ideal for:
- Custom Cummins fuel systems
- Dodge Ram factory filter bypass systems
- Custom lift pump installations
- Diesel pickup trucks
- Agricultural equipment
- Construction equipment
- Diesel generators
- Transfer tanks
- Slip tanks
- Farm fuel storage
- Fleet service vehicles
- Industrial diesel equipment
Compatibility depends on the fuel-system layout, operating pressure, hose size, and available mounting space.
Kit Contents
The Glacier Diesel Power Universal Twin Fuel Filter Kit includes:
- Fleetguard FS1212 Fuel/Water Separator
- Fleetguard FF5320 Fuel Filter
- Glacier universal twin-filter mounting bracket
- Mounting hardware
- Choice of 3/8-inch or 1/2-inch Push-Lok fittings
Fuel hose, lift pump, shutoff valves, pressure gauges, and additional adapters are sold separately unless otherwise specified.
Important Notes
- Universal installation kit.
- Designed for diesel fuel systems.
- Verify fuel-flow direction before installation.
- Confirm the selected fittings match your fuel hose size.
- Mount the assembly where both filters remain accessible for routine maintenance.
- Drain accumulated water from the FS1212 regularly.
- Prime the fuel system after installation.
- Inspect all fuel connections for leaks before placing the system into service.
- Replace filters according to service interval, fuel quality, or restriction.
Common Failure Point
Contamination entering from transfer tanks, bulk storage tanks, or poor-quality fuel can shorten the life of expensive fuel-system components.
Using a dedicated fuel/water separator ahead of the final fuel filter helps reduce the amount of water and larger debris reaching the secondary filter. Regularly draining the separator and replacing both filters at the recommended intervals will help maintain proper fuel flow and protect downstream components.
If filters require replacement unusually often, inspect the fuel source, storage tank, and transfer equipment for contamination instead of simply replacing the elements.
Complete Your Fuel System
Complete your custom diesel fuel system with:
- Glacier Fuel Boss Mechanical Lift Pump
- Glacier Fuel Pressure Gauge and Sender
- Glacier Fuel Pressure Test Fittings
- Push-Lok Fuel Hose
- Replacement Fleetguard FS1212 Fuel/Water Separators
- Replacement Fleetguard FF5320 Fuel Filters
- Glacier Big Line Kits