
Fuel Pro® Series Fuel Water Separators: Trusted Protection for Class 8 Fleets
With advanced technology media, the Fuel Pro® series offers industry-leading service intervals, extending filter life while protecting your valuable equipment.
✓ ISO 14001 for Environmental Management
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✓ IATF 16949 for Quality Management
Extended Life, Maximized Uptime
Poor-quality diesel and water infiltration can lead to rust, corrosion, and microbial growth that permanently damages critical engine components. Even if parts can be repaired, you can face breakdowns, complicated fixes, and downtime, hindering your operations. You need a fuel water separator you can trust to avoid these issues, which is where our Fuel Pro® series comes in.
Capable of handling fuel flow rates up to 180 gallons per hour, Fuel Pro® diesel fuel filtration and water separation systems are designed to withstand the harshest conditions. As a leader in Class 8 heavy-duty filtration solutions, DAVCO units include optional water-in-fuel (WIF) sensors, fluid heat (return fuel or coolant), electric pre-heaters, and overnight heaters.
Reduce maintenance and downtime
Extend on-engine filter life
Seeing is Believing® technology gives immediate, actionable line of sight into filter health
Pre-heating options to aid with cold weather start-ups
Visually troubleshoot fuel system including, discoloration, air bubbles, and gelling
Know when water drain-off is required with an optional WIF sensor
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Fuel Pro® Is Your Fuel Water Separation Solution
⚠️ The Cost of Getting It Wrong
Fleets waste an estimated 50% or more of unused filter life by changing filters prematurely. On the other hand, when filters clog and water damages an engine:
DAVCO lets you avoid these hardships with systems designed to maximize savings, uptime, and ease of use. Our Fuel Pro® fuel water separators:
Our Seeing Is Believing® technology uses a trademarked clear cover that offers an immediate visual diagnostic of your fuel water separator, letting you spot spent filters, air leaks, and fuel gelling so you can address issues quickly. Here’s what to look for:
| Visual Indicator | What It Means |
|---|---|
| ✓ Healthy System | Fuel level is below the top – the filter is fine |
| ✗ Filter Change Needed | Fuel level has reached the top of the filter and low power is present |
| ⚠ Air Bubbles Present | Bubbles can be seen floating in the fuel – check all fittings and lines from the fuel tank to the Fuel Pro®, then check the cover and vent cap O-rings |
| ✗ Fuel Gelling | Top of the fuel level appears waxen – change the filter and run the engine at idle for a minimum of 25 minutes |
Top Products

Fuel Pro® 382
The Fuel Pro® 382 is an all-in-one diesel fuel filtration and water separation solution for heavy duty on-highway diesel engines with flow rates up to 180 gallons per hour (GPH).

Fuel Pro® 385
The Fuel Pro® 385 is an all-in-one diesel filtration and water separation solution for Western Star 4900 engines with flow rates up to 180 gallons per hour (GPH).

Fuel Pro® 386
Fuel Pro® 386 is an unheated, all-in-one diesel filtration and water separation solution for heavy-duty diesel engines with flow rates up to 180 gallons per hour (GPH).

Fuel Pro® 387
Fuel Pro® 387 is a coolant heated, all-in-one diesel filtration and water separation solution for heavy-duty diesel engines that boasts flow rates up to 180 gallons per hour (GPH).

Fuel Pro® 388
Fuel Pro® 388 is an all-in-one diesel filtration and water separation solution for heavy-duty diesel engines with flow rates up to 180 gallons per hour (GPH) with return fuel heat only.

Fuel Pro® 483
Fuel Pro® 483 is an all-in-one diesel filtration and water separation solution for heavy-duty diesel engines with flow rates up to 180 gallons per hour (GPH).

Fuel Pro® 485
Fuel Pro® 485 is an all-in-one diesel filtration and water separation solution for heavy-duty diesel engines with flow rates up to 180 gallons per hour (GPH).

Fuel Pro® 487
Fuel Pro® 487 is an all-in-one diesel filtration and water separation solution for heavy-duty diesel engines with flow rates up to 180 gallons per hour (GPH).

Fuel Pro® 488
Fuel Pro® 488 is an all-in-one diesel filtration and water separation solution for heavy-duty diesel engines with flow rates up to 180 gallons per hour (GPH).

Fuel Pro® 499
Fuel Pro® 499 is an all-in-one diesel filtration and water separation solution for heavy duty diesel engines with flow rates up to 180 gallons per hour (GPH).
Why DAVCO Is Your Source for Fuel Water Separators
DAVCO has built more than 3 million diesel fuel filtration systems for customers since 2004, supplying them with units that provide key status indicators and can be serviced in minutes. We stand out through our:
- ISO 14001 and IATF 16949 certified processes
- On-site training in the field or at the dealership level, something competitors can’t match
- Rapid response time for truck down situations, with our team being able to ship out components quickly
- Retrofit kits and service parts and components that are available on our webstore
FAQs on Fuel Filtration
Does seeing fuel in the clear cover mean I need to change the filter?
No. By using our Seeing Is Believing® technology, you only need to change the filter when the fuel reaches the very top of the filter. If the fuel level is below the top of the filter, it is still operating normally.
How does the Fuel Pro® handle cold weather and gelling?
Fuel Pro® systems offer optional fluid heating (using return fuel or coolant) and electric pre-heaters that raise the fuel temperature to melt wax crystals, preventing clogs and ensuring easy flow in freezing temperatures.
What happens if there’s an air leak in my fuel system?
If you have an air leak, you will be able to visually see bubbles flowing in with the fuel through our clear covers. This allows your technicians to quickly diagnose the issue and check fittings, lines, or O-rings before the problem causes engine failure.
Protect Your Engines with Fuel Water Separators
| Avoid engine failures that can create costly repairs and cripple your business. Use our Fuel Pro® fuel water separators to monitor your equipment so you can act quickly when needed. Contact us today to get started. |
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“The DAVCO is an easy add on that is very easily monitored. When the filter does need to be replaced it takes my technicians about five minutes to completely service this unit. We have seen a significant reduction in the amount of fuel related problems on all the buses that we added the DAVCO product to. The DAVCO system is now part of our specification build sheet for purchasing new buses.”






