Better Testing

In a traditional filter comparison test, fluid with added debris and dirt circulates in a closed loop. Testers evaluate capacity (how many contaminants the filter can hold) and efficiency (the ratio of contaminants of a certain size the filter collects).

Our test was different because it included actual machine components, too.

We circulated fuel through a Cat C9 engine fuel system test rig, which included a cylinder head, injectors, pump and other Cat fuel system components—just like what you’d find in an operating machine. We simulated harsh conditions by running this test rig at high idle speeds.

Better Results

We terminated our test at 50 hours or when the fuel injector exhibited a leakage rate three times that of new, whichever came first.

Of the five fuel filters we tested, only one—the Cat 1R-0749 Advanced High Efficiency Fuel Filter—allowed the fuel injector to reach 50 hours of testing. In fact, injectors with Cat fuel filters lasted 45% longer than the nearest competitor, with much less wear and fewer leaks.

Injectors with the other four filters experienced significant erosion and leak paths, due to a high level of contaminants getting through the filter. That kind of performance could shorten your fuel system component life, make your engine harder to start, decrease your power and increase your fuel use and costs.

Wix 33674
Fleetguard FF5319
Baldwin BF7585
Donaldson P551311
Cat 1R-0749
  • 100%
  • 90%
  • 80%
  • 70%
  • 60%
  • 50%
  • 40%
  • 30%
  • 20%
  • 10%

Savings With

Better for Your Bottom Line

When you choose another filter brand over a Cat fuel filter, you might save 30-40% upfront. But our testing shows you may pay much more down the road—anywhere from 80-400% more—due to early-hour fuel injector failure.

With Cat fuel filters and good fuel practices, your injectors may last as long as your machine—boosting your productivity, uptime, fuel efficiency and bottom line.


Other brands may fit, but Cat filters protect your engine, drive train, and hydraulic systems and components better. Our advanced design delivers maximum filtration efficiency and protection for your machine. For you, that means more uptime and lower owning and operating costs.

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1. No Flexing

Spiral roving eliminates pleat movement and keeps contaminants from working their way into the clean side of the filter. (Testing shows filters with spiral roving have 45% lower particle counts than others.) Other brands often flex as fluid travels through them, releasing contaminants that can cause wear.

2. No Bunching

Acrylic beads rigidly maintain pleat spacing and maximize the filter’s surface area—capturing and holding contaminants until the required change interval. Pleat bunching is common in other brands, allowing contaminants to circulate, cause clogging and shorten filter life.

3. No Metal Contamination

Fiberglass-reinforced nylon center tubes eliminate metal contamination and are 30% stronger than metal tubes, helping prevent collapse during pressure spikes or cold starts. In other brands, metal center tubes often carry metal contaminants left over from manufacturing, which can cause wear.

4. No Gaps

Molded end caps completely seal the clean side from the dirty side, eliminating gaps and keeping contaminants where they belong. Other brands have metal end caps glued on top of filter pleats—creating gaps that allow contaminants to reenter from the clean side.