Glacier Diesel Power | Universal Inline 3 Micron FF5814 Fuel Filter Kit

Glacier Diesel Power Universal Inline Fleetguard FF5814 NanoNet 3-Micron Fuel Filter Kit (FF5814-UK)

Description

Modern diesel injection systems operate with extremely tight internal clearances, making clean fuel essential for protecting the injection pump and injectors.

The Glacier Diesel Power Universal Inline FF5814 Fuel Filter Kit provides a flexible way to add high-efficiency secondary fuel filtration to a custom diesel fuel system. It can be used when bypassing the factory fuel filter on a Cummins-powered Dodge Ram, building a custom lift-pump system, or filtering diesel dispensed from a transfer tank, slip tank, farm tank, or onsite storage tank.

At the center of the kit is the Fleetguard FF5814, a NanoNet fuel filter designed as a higher-efficiency upgrade for applications using the FF5320-style filter. Glacier pairs the filter with a universal frame-mount bracket, installation hardware, and your choice of 3/8-inch or 1/2-inch Push-Lok fittings.

The result is a serviceable, frame-mounted filtration package that can be adapted to a wide range of diesel vehicles and equipment without requiring a platform-specific mounting location.

Features

• Universal inline diesel fuel filter kit
• Includes Fleetguard FF5814 NanoNet fuel filter
• 3-micron filtration rating
• Higher-efficiency upgrade for FF5320-based systems
• Glacier universal frame-mount bracket
• Choice of 3/8-inch or 1/2-inch Push-Lok fittings
• Installation hardware included
• Replaceable spin-on filter design
• Suitable for custom vehicle fuel systems
• Useful for transfer tanks, slip tanks, farm tanks, and bulk diesel storage
• Designed to help protect diesel injection pumps and injectors from particulate contamination

Why Upgrade to NanoNet Filtration?

Not all fuel filters capture contamination with the same efficiency or maintain the same performance throughout their service life.

The FF5814 uses Fleetguard NanoNet media, which is designed to capture fine particulate contamination while maintaining a stable fuel flow path. This makes it a strong choice for high-pressure common-rail diesel systems where even small particles can contribute to wear inside the injection pump and injectors.

The kit is especially useful as a final-stage filter installed downstream of a lift pump and primary fuel/water separator. In that position, the primary filter removes larger debris and free water, while the FF5814 provides finer particulate filtration before the fuel reaches the engine.

Adding finer filtration may help protect:

• CP3 and other high-pressure injection pumps
• Common-rail fuel injectors
• Fuel pressure regulators
• Metering valves
• Lift-pump components located downstream
• Other precision diesel fuel-system components

This filter is intended to capture particulate contamination. It should not automatically be treated as a replacement for a dedicated fuel/water separator.

Glacier Fuel System Tech Tip

A finer filter should normally be used as the secondary or final-stage filter, not as the first filter pulling directly from a contaminated tank.

Fine filter media captures smaller particles, but it can also load more quickly when exposed to heavy debris or water. For most custom diesel systems, the preferred arrangement is:

1. Fuel tank
2. Coarse pre-filter or fuel/water separator
3. Lift pump
4. FF5814 final-stage fuel filter
5. Injection pump

The exact layout depends on the lift-pump manufacturer’s requirements. Some pumps are designed to pull through a coarse filter but should push through the finer final-stage filter.

Always verify pump placement, filtration requirements, hose size, and pressure limitations before installation.

Why Glacier Built It This Way

A universal fuel filter kit should be adaptable without forcing the installer to assemble an assortment of unrelated brackets and fittings.

Glacier built the kit around a dedicated frame-mount bracket that keeps the filter assembly secure while leaving it accessible for routine service. Customers can select either 3/8-inch or 1/2-inch Push-Lok fittings to match the plumbing already used in the fuel system.

The FF5814 was selected for customers who want finer filtration than the standard FF5320 configuration. Its spin-on design keeps maintenance straightforward, while the NanoNet media provides a more advanced final filtration stage for modern diesel fuel systems.

The system remains intentionally simple:

• A quality filter
• A solid mounting bracket
• Correctly sized fittings
• Serviceable plumbing
• No unnecessary electronics or proprietary replacement elements

FF5814 Versus FF5320

Both filters can be used in universal inline diesel filtration systems, but they serve slightly different customers.

FF5320

The FF5320 is a practical general-purpose fuel filter for custom diesel systems, transfer tanks, and equipment applications.

It may be the better choice when:

• General particulate filtration is the priority
• Replacement cost is a major consideration
• The fuel source is filtered elsewhere
• The application does not require the finer NanoNet element

FF5814 NanoNet

The FF5814 is the higher-efficiency upgrade and is better suited for customers who want finer final-stage filtration before the injection system.

It may be the better choice when:

• Protecting a modern common-rail system is the priority
• The truck has expensive injectors or injection-system upgrades
• The filter is being used downstream of a primary water separator
• The customer wants the NanoNet media upgrade
• The fuel system is built around the FF5320-compatible filter head

Universal Applications

Potential applications include:

• Custom Cummins fuel systems
• Dodge Ram factory-filter bypass systems
• Custom lift-pump installations
• Diesel pickup trucks
• Agricultural equipment
• Construction equipment
• Diesel generators
• Off-road machinery
• Transfer tanks
• Slip tanks
• Farm fuel tanks
• Mobile fueling systems
• Onsite diesel storage systems

This is a universal product. Final compatibility depends on the fuel-system layout, filter-head compatibility, operating pressure, fuel flow requirement, hose size, and available mounting space.

Transfer Tank and Bulk Fuel Applications

Diesel stored in transfer tanks and onsite storage systems can collect contamination from several sources:

• Dirt entering through caps or vents
• Rust and scale inside the tank
• Debris from hoses and dispensing nozzles
• Sediment disturbed while the tank is transported
• Contamination introduced during refilling

The FF5814 kit can be installed on the dispensing side of a transfer system to provide finer particulate filtration before fuel enters the receiving equipment.

For heavily contaminated storage tanks, the FF5814 should not be expected to correct the source problem by itself. A coarse primary filter or water separator may be more appropriate ahead of the fine filter, and the tank should be inspected if filters repeatedly plug in a short period.

Kit Contents

The Glacier Diesel Power Universal Inline FF5814 Fuel Filter Kit includes:

• Fleetguard FF5814 NanoNet spin-on fuel filter
• Glacier universal mounting bracket
• Filter mounting hardware
• Required installation hardware
• Push-Lok fittings in the selected hose size

Available fitting options:

• 3/8-inch Push-Lok
• 1/2-inch Push-Lok

Fuel hose, lift pump, water separator, shutoff valves, pressure gauge, and application-specific adapters should only be listed as included when specifically selected with the kit.

Applications and Fitment

This kit is universal and does not have a single year, make, or model application.

It can be adapted to compatible diesel fuel systems using:

• 3/8-inch fuel hose
• 1/2-inch fuel hose
• A suitable mounting location
• A compatible operating pressure and flow rate
• Correctly configured primary and secondary filtration

Some fabrication, drilling, hose routing, or additional fittings may be required.

Important Notes

• This is a universal installation kit.
• Confirm fuel-flow direction before installation.
• Verify that the selected fittings match the hose size being used.
• Confirm that the filter head and system are compatible with the FF5814.
• Review the lift-pump manufacturer’s filtration and mounting requirements.
• Fine filtration is generally best used downstream of a coarse pre-filter or water separator.
• Mount the assembly where it is protected from road debris and impact.
• Leave enough clearance below the filter for future removal.
• Keep fuel plumbing away from exhaust heat, sharp edges, and moving components.
• Use only diesel-compatible hose, fittings, and sealing materials.
• Prime the fuel system after installation.
• Inspect all connections for leakage before placing the system into service.
• Replace the filter according to restriction, fuel condition, application, and service interval.
• The FF5814 is a particulate fuel filter and should not be advertised as a dedicated water separator unless separate documentation confirms that capability.

Common Failure Point

A fine fuel filter can only hold a limited amount of contamination.

As the FF5814 captures particles, restriction across the filter gradually increases. This is normal, but allowing the element to remain in service after it becomes heavily loaded can reduce the fuel pressure and volume available downstream.

Possible signs of excessive filter restriction include:

• Low fuel pressure
• Hard starting
• Reduced power under load
• Increased lift-pump noise
• Pressure drop during acceleration
• Extended transfer-tank dispensing time
• Engine hesitation or stalling

A filter that plugs unusually quickly is often an indication of contaminated fuel, tank corrosion, microbial growth, water intrusion, or debris elsewhere in the system. Replacing the filter without correcting the source may lead to repeated restrictions.

Complete Your Fuel System

Complete your custom diesel fuel system with:

• Glacier universal fuel/water separator kit
• Glacier Twin Fuel Filter System
• Glacier Severe Service Twin Fuel Filter System
• Glacier Fuel Boss Mechanical Lift Pump
• Glacier fuel-pressure gauge and sender
• Glacier fuel-pressure test fittings
• 3/8-inch or 1/2-inch Push-Lok fuel hose
• Replacement Fleetguard FF5814 filters
• Glacier Big Line Kits
• Shutoff valves and service fittings