Ultimate Clean Fuel System for Diesel Engines

What Makes Keenan Better

Your diesel engine is the most important system on your vessel and without clean fuel it will not run properly. Most boat operators are limited in the care they can provide their fuel system simply because basic filter only setups lack crucial monitoring, maintenance and troubleshooting tools.

With Keenan, fuel system maintenance is simple to perform. Our systems replace the basic fuel filter with a comprehensive fuel maintenance system that provides all the right tools to ensure clean, trouble free, fuel delivery from tank to engine.

Standard Fuel System vs Keenan

From Tank to Engine, Our Systems Protect, Monitor and Warn of Potential Problems

Diesel engine fuel systems all incorporate the same basic components. If any of these fail the engine stops. Keenan systems help you monitor all these
components and warns you of developing problems before it’s too late.

  • Fuel Tank: contamination, polishing
  • Fuel Lines: System Integrity, air leaks. Easy system testing before you leave the dock- just like a preflight check.
  • Primary Filter: Advance warning is knowing when the filter is failing due to blockage or water, dual filters keep the engine operating while the dirty filter is changed.
  • Internal Priming: internal priming system simplifies filter replacement and priming all while the engine is operating
  • Engine Fuel Pump: pump failure causes engine shutdown, our systems provide a backup fuel pressure
  • Secondary Filter: clogging, replacement and priming
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  • CLEANS
    Removes Microbial Growth, Water and Sludge
  • MONITORS
    Built-In Diagnostics to Spot Problems Early
  • PROTECTS
    Prevent Clogs, Shutdowns, and Costly Repairs
  • WARNS
    Remote Alerts Before Fuel Issues Affect Performance

Explore Our Systems

Compare All Systems
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Introducing The CommandBoss

Helm-Mounted Control Panel

Take command of your entire fuel system from the helm. Monitor performance, switch filters, and resolve issues instantly—no need to step into the engine room.

Complete Fuel Management

From balancing fuel loads between tanks to polishing onboard fuel, CommandBOSS puts every critical function at your fingertips, ensuring smooth, reliable operation.

Full Helm-Mounted Control Panel

No need to stop engines or go into the engine compartment to handle fuel issues.

Comprehensive Fuel Management Functions

Switch engine filters on both engines from the cockpit.

Plug-and-Play Catamaran System

Prewired and designed for easy installation (new builds or retrofits).

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Built to Keep You Running.

We Don't Just Sell Filters - We Prevent Breakdowns

  • Diesel fuel causes

    80%

    of diesel engine failures

  • Extend your filter life by

    3X

    with fuel polishing

  • Within 6-12 Months

    90%

    of diesel tanks contain microbial contamination

Don't take our word for it...

  • I never leave shore without it

    It's great. Keeps our fuel clean. Easy to switch when filters are bad. It has been just a real blessing. We can polish fuel, transfer fuel from tank to tank. I never leave shore without it.

    Keith
    Sailing Zatara

  • Mechanically Excellent

    I've always been a big fan of FilterBoss and I've seen how it's evolved through the years. It's a beautiful system that is not only visually impressive but is mechanically excellent in my opinion

    Pete Gulick
    Professional Surveyor & Owner of Blue Yonder Marine

  • Best decision I made building my sailboat

    I have yet to have a fuel related issue and I attribute that to our Keenan filter system. Swapping filters is a breeze and the attached pump lets us polish fuel, transfer it tank to tank and clear any airlocks between tank and filter. It is a godsend.

    Steve
    Acorn to Arabella

  • Why not have the best you can

    We knew we needed some kind of filtration system in the boat. We weren't going to go far until we got that done. Diesel fuel is dirty in itself and it doesn't take but one bad tank of fuel. How do you take the chance of being on the boat? Why not have the best you can? You won't have any fuel problems that you can't take care of. I've researched this product and it's always been great.

    Beverly & Mitchell Rowell
    Director, Company name