Fleetguard Filters Guide

Fleetguard at a Glance

Fleetguard is one of the best-known heavy-duty filter brands in the world. It was started by Cummins in 1958 and is now a brand of Atmus Filtration Technologies, headquartered in Nashville, Tennessee, which was listed as an independent company in 2023. Fleetguard filters are the original filtration choice on many Cummins engines, and their numbers appear on trucks, buses, construction machinery, and generator sets of many brands.

Fleetguard Filter Technology

NanoNet. Introduced by Cummins Filtration in 2012, NanoNet media removes and retains, according to the company, 98.7 percent of particles as small as four microns. It is used in fuel filters such as the FF5825NN and in lube filters.

StrataPore. A Fleetguard media used in many lube filters and fuel/water separators, designed to give low restriction and quick protection against larger particles.

Combination lube filters. The LF3000 introduced combined full-flow and bypass filtration in a single spin-on in the 1980s. The LF14000NN, introduced for the Cummins X15 and ISX15 and named an industry new product of the year, pairs StrataPore media, which handles about 60 percent of the flow, with NanoNet media for the remainder.

Common Fleetguard Filter Numbers

While exact filter part numbers depend on the specific engine series and build, the following Fleetguard numbers appear frequently in heavy-duty maintenance:

Lube (Oil) Filters

• LF14000NN (Cummins 4367100) – The standard lube filter for the Cummins X15 and ISX15, cross-referenced to WIX WL10107, Fram PH8691, Hifi SO10142, and Donaldson P550949; LF14001NN is the companion number
• LF9009 (Cummins 3401544) – About 11.88 inches tall and 4.66 inches in diameter, used on Cummins L9, ISL9, ISC8.3, ISM, N14, M11, and NTA855, and cross-referenced to Volvo 14503824 and 22497303 and WIX 51748XD; LF14009NN is its later extended-service counterpart
• LF9070 (Cummins 2882673) – Larger StrataPore lube filter about 13.88 inches tall
• LF3349 (Cummins 3932217) – Lube filter for the Cummins 6BTA5.9, cross-referenced to Donaldson P550008
• LF3970 – Lube filter for the Cummins B6.7 and ISB
• LF667 and LF3654 – Lube filters matching Volvo 21707133 and 21707132 on the D13 engine
• LF16520, LF701 and LF16250 – Lube filters matching Perkins 87803206, 2654403, and CH10929
• LF16285 and LF16368 – Lube filters matching Weichai 1000428205 and the DAF MX-13 oil filters

Fuel Filters and Fuel/Water Separators

• FF5825NN (Cummins 5365988) – NanoNet stage 2 fuel filter for the Cummins X15 (4.0 micron efficiency of 99.2 percent, M90x2 thread); FF5971N (Cummins 5575143) is the 2020-and-later version
• FS19764 (Cummins 102527) – Stage 1 fuel/water separator for the Cummins X15; FS20172 (PACCAR K37-1011 and K37-1029) and FS20207 (PACCAR K37-1021) are the 10-micron versions
• FF5052 (Cummins 3931063) – Fuel filter for the Cummins 6BTA5.9 and other B-series engines
• FS1235 – Fuel/water separator for 4BT3.9, 6BT5.9, 6CT8.3, and ISM engines
• FF5776 (Cummins 2864993) and FS36401 (PACCAR K37-1004) – Fuel filter and separator for ISX engines
• FF63041NN – Extended-service fuel filter for 2020 Cummins L9 engines; FF63010 (Cummins 3689131, John Deere RE574467) is another related number
• FS19765 and FS20313 – Fuel/water separators commonly listed for Mack MP7 and MP8 trucks, with FF42128NN as the spin-on fuel filter
• FF5507 and FF261 – Fuel filters matching Volvo 20972293 and Perkins 2656F843 and Cat 299-8229
• FF5714 and FF5713 – Fuel filters matching Perkins CH10930 and CH10931
• FF5740 and FF5770 – Fuel filters matching Donaldson R010018 for FAW, Weichai, and Shacman applications

Air Filters

• AF24302 – Air filter matching PACCAR P621725 for Kenworth T680 and T880 and Peterbilt 567 and 579; AF24305 matches PACCAR P611698
• AF4195 and AF4197 – Air filters matching PACCAR P614986 and X011622 for the Kenworth W900 and Peterbilt 367 and 389
• AF26363 – Air filter for Mack MP7 and MP8 engines
• AF26173 (Cummins 4946497) – Air filter for 500 kVA QSX15-C generator sets; AF55024 (Cummins 3688918) for L9, QSL9, and QSX15
• AF25544 and AF25545 – Air filters for QSL9-G5 and C275 generator sets
• AF25352, AF25492 and AF25526 – Air filters matching Perkins 26510342, 26510353, and 26510337
• AF25895 – Air filter matching Iveco 2996238 for Cursor engines

Other Filters

• CV50626 (Cummins 2895324) – Crankcase ventilation filter for the Cummins X12
• WF2126 (Cummins 4907485) – Coolant filter for the Cummins X15 and X12
• UF106 (Cummins 4388378) – DEF filter for the Cummins X15

These numbers are useful references when identifying the correct replacement. Always confirm the exact filter by engine serial number, application, or existing filter part number when possible.

Fleetguard Quick Reference by Application

Fleetguard Filter Maintenance

Lube filters. Replace the lube filter with every oil change. Extended-service filters such as the LF14000NN are designed to support the longer intervals of modern engines, but only with the correct oil and within the manufacturer's maximum interval.

Fuel filters. Replace the fuel/water separator and the main fuel filter together, drain water regularly, and prime the system after replacement. High-efficiency fuel filters protect common-rail injectors, so do not substitute a coarser filter.

Air filters. Check the restriction indicator and replace the element when it trips. Dusty duty needs shorter intervals.

Coolant, DEF, and crankcase filters. Replace these on schedule, since they are often overlooked and are important for modern emission systems.

Service intervals depend on the engine model, emission standard, oil specification, duty cycle, and the manufacturer's maintenance schedule. Always follow the schedule for your specific vehicle or machine.

How to Choose the Right Fleetguard Replacement

• Start from the engine and model year, since Fleetguard offers several versions of a filter for the same engine, such as standard and extended-service versions.
• Match the Cummins or OE number against the Fleetguard number, then confirm dimensions, thread, and gasket.
• Check that the replacement meets the same efficiency rating, especially for fuel filters.
• For mixed fleets, keep a table of Fleetguard numbers and their OE equivalents.

Frequently Asked Questions

What is the Fleetguard filter for a Cummins X15? The standard lube filter is LF14000NN (Cummins 4367100), the stage 1 fuel/water separator is FS19764 or the 10-micron versions FS20172 and FS20207, and the stage 2 fuel filter is FF5825NN or the later FF5971N.

What replaces the Fleetguard LF9009? Fleetguard lists later upgrade paths such as LF14009NN and LF14002NN. They are not necessarily interchangeable with LF9009 for every engine, so verify by engine and year.

Are Fleetguard numbers the same as Cummins numbers? No, but each Fleetguard filter usually has a matching Cummins part number, such as LF14000NN and 4367100, or LF9009 and 3401544.

Does ADAOER Filter sell Fleetguard filters? No. ADAOER Filter is an independent manufacturer. It can provide cross-reference matching for applications covered by Fleetguard numbers on request, but its products are not Fleetguard products.

For fleets, distributors, and importers sourcing replacement filters for the applications covered by Fleetguard cross-references, ADAOER Filter manufactures fuel, oil, air, cabin, and hydraulic filters for trucks, buses, and heavy machinery, and supports OEM/ODM development for custom specifications. Cross-reference lists are available on request.

Brand names and part numbers are used for identification and compatibility reference only. Donaldson, Fleetguard, Atmus, Cummins, PACCAR, Kenworth, Peterbilt, DAF, Baldwin, WIX, Mann, Hengst, Fram, Volvo, Caterpillar, and Perkins are trademarks of their respective owners. ADAOER Filter is an independent manufacturer and is not affiliated with, authorized by, or endorsed by any of these companies. Part numbers vary by engine, emission standard, and production date, so always verify the correct filter against the engine model and the existing filter before ordering.