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Reusable K&N Heavy Duty Air Filter for Some Kenworth, Peterbilt and Western Star Trucks Available

K&N Heavy Duty Air Filter 38-2021R
K&N Heavy Duty Air Filter 38-2021R
K&N Heavy Duty Diesel Air Filters are designed to increase horsepower through a low-restriction, high air flow design.  While this is a great feature the fact that they are washable and reusable in a world of throw away filters gets the attention of big rig truck owners.  After they see how easy the process is to clean the filters and get them reinstalled the main question is does K&N make one for my rig?  Watch K&N's Heavy Duty Air Filter Cleaning video to see for yourself.

K&N has been working hard releasing new parts to increase class 4-8 truck coverage.  One addition to the K&N heavy duty air filter line is part number 38-2021R. This washable/reusable air filter is manufactured from quality components and backed by K&N's Heavy Duty Air Filter 3-year/300,000 mile limited warranty.

K&N's 38-2021R is a reverse flow air filter meaning the air flows from inside the air filter then out through the sides.  This filter's hybrid synthetic material does not require oil like most K&N products. No oil equates to less time spent servicing the air filter.

The 38-2021R air filter is made with thick urethane seals, heavy duty wire mesh for structural support, and durable air filter material for long life.  It is used on some Kenworth, Peterbilt, and Western Star Trucks as well as in other applications.

The best method of determining the correct K&N heavy duty air filter for your needs is to use our air filter cross reference search.

The 38-2021R is a cross reference to the disposable air filter parts listed below:

Baldwin RS3534
Carquest 88863
Donaldson P534925
Fleetguard AF25248
Fram CA8231
Hastings AF2283
Luber-Finer LAF3302
Napa 6863
Purolator A75974
WIX 46863

Find K&N products for your street car or truck using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.