Mack Truck Filters Guide

Mack at a Glance

Mack Trucks is one of the oldest and best-known heavy-truck brands in North America, with a history going back to 1900 and a headquarters in Greensboro, North Carolina. It became part of the Volvo Group in the early 2000s. Mack is especially strong in vocational work, such as construction, refuse, and heavy haul, as well as long-haul, and its bulldog emblem is recognized around the world.

Mack Engines and Why They Matter for Filters

Mack's MP7 and MP8 engines are closely related in size and design to the Volvo D11 and D13, and many of their filters are shared. Fleetguard describes its FF42128NN fuel filter as a direct replacement for the FF5967 on 2017 Mack MP7 and MP8 and Volvo D11 and D13 engines, and Volvo's own oil filter 21707133 appears in the same compatibility lists. This is useful for fleets and distributors that service both brands.

Common Mack Filter OE Numbers

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

Oil Filters

• 23658111 – Spin-on full-flow oil filter listed for 2024 and 2025 Mack Anthem and Granite trucks with the MP7
• 21707135 – Oil filter listed for 2016 to 2021 Mack LR, TerraPro, Pinnacle, Granite, and Anthem trucks, cross-referenced to WIX WL10106 and PAI 804098
• 21707133 – Volvo's full-flow oil filter for the D11 and D13, which also appears in compatibility lists for related engines
• Fleetguard LF17502, LF4006 and LF16465 – Commonly listed Fleetguard oil filters for Mack Anthem, Granite, and Pinnacle
• Donaldson P550425, P551807 and P582021, and Baldwin B7409, B76SS and B40153 – Equivalent oil filters listed for the same trucks

Fuel Filters and Water Separators

• FS20313 (Mack 24009059 and 24009058) – Fuel separator for the Mack MP7 and MP8 in the Anthem, Granite, and Pinnacle
• Fleetguard FF42128NN – Spin-on fuel filter (8.68 inches long, 3.93 inches in diameter, M32x1.5 thread), a direct replacement for FF5967 on 2017 and later MP7 and MP8 engines
• Fleetguard FS19765 – Fuel/water separator commonly listed for Mack Anthem, Granite, and Pinnacle
• Donaldson P550851 and Baldwin PF7930 and BF46117 – Equivalent fuel filters listed for the same trucks

Air Filters

• 25100042 (Fleetguard AF26363) – Engine air filter for the Mack MP7 and MP8, cross-referenced to Baldwin RS4634 and Luber-finer LAF5114MXM
• Fleetguard AF25687, Donaldson P645114 and P600676, and Baldwin RS3936 – Other air filters commonly listed for Mack trucks
• 21306498 – Engine air cleaner assembly listed for Mack Granite, Pinnacle, and Anthem

Other Filters

• 21937298 – Coolant filter listed for 2020 Mack Anthem, Granite, Pinnacle, and TerraPro

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

Mack Cross-Reference Quick Table

Mack Filter Maintenance

Oil filters. Replace the oil filter with every oil change. Vocational Mack trucks, such as dump trucks, mixers, and refuse trucks, run long hours at idle and low speed, which is hard on oil and filters, so shorter intervals are often wise.

Fuel filters. Replace the fuel separator and main fuel filter together, drain the separator regularly, and prime the system after replacement. Newer Mack engines use a high-efficiency fuel filtration system, so use filters of the correct efficiency grade.

Air filters. Check the restriction indicator and replace the primary element when required. Construction and quarry duty can clog an air filter many times faster than highway use.

Coolant and other filters. Some Mack engines have a coolant filter that also needs replacing on schedule. Replace DEF filters and cabin air filters as the maintenance schedule requires.

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

How to Identify the Correct Mack Filter

• Confirm the engine (MP7, MP8 or the natural gas engine) from the engine data plate or VIN.
• Note the model year, since filter numbers changed in 2017 and again in recent model years.
• Record the model (Anthem, Pinnacle, Granite, LR, TerraPro), because air filters and cabin filters vary.
• If you service Volvo trucks too, check whether the Volvo D11 or D13 filter cross-reference applies.

Frequently Asked Questions

What oil filter does a Mack Anthem use? For 2024 and 2025 Anthem trucks with the MP7, catalogs list Mack 23658111. For 2018 to 2021 Anthem trucks, 21707135 is commonly listed. Verify by engine and model year.

Do Mack and Volvo trucks share filters? Often, yes. The Mack MP7 and MP8 are related to the Volvo D11 and D13, and filters such as Fleetguard FF42128NN are listed for both. Confirm by engine code and year.

What air filter does a Mack Granite use? Fleetguard AF26363 (Mack 25100042) is commonly listed for MP7 and MP8 Granite trucks, but the air cleaner assembly and filter vary by model year, so verify.

Can aftermarket filters be used on Mack trucks? Yes, if they meet or exceed the original specification for efficiency, flow, and pressure rating and come from a manufacturer able to supply test data. Check warranty terms on newer trucks.

For fleets, owner-operators, and distributors sourcing replacement filters for Mack trucks, 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. Kenworth, Peterbilt, Mack, PACCAR, Volvo, Cummins, Fleetguard, Donaldson, Baldwin, WIX, Luber-finer, Hastings, and Mann-Hummel are trademarks of their respective owners. Part numbers vary by engine, emission standard, and production date, so always verify the correct filter against the engine model, the truck's VIN, and the existing filter before ordering.