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K&N Offers Washable & Reusable Class 4-8 Heavy Duty Diesel Replacement Air Filter

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A K&N Replacement Heavy Duty Diesel Air Filter is constructed with extra strength and reinforcements to withstand the harsh conditions that can be found in commercial use

A K&N Replacement Heavy Duty Diesel Air Filter is constructed with extra strength and reinforcements to withstand the harsh conditions that can be found in commercial use

The easiest way to find the K&N Replacement Heavy Duty Diesel Air Filter for your application is by using the filter you already have to perform a K&N HD diesel air filter cross reference

The easiest way to find the K&N Replacement Heavy Duty Diesel Air Filter for your application is by using the filter you already have to perform a K&N HD diesel air filter cross reference

A K&N Replacement Heavy Duty Diesel Air Filter is constructed with extra strength and reinforcements to withstand the harsh conditions that can be found in commercial use. Forming the basis of a K&N washable HD Diesel air filter is K&N’s Hybrid Dryflow® Air Filter media. The robust Dryflow Air Filter media is comprised of lofted non-woven synthetic fibers to create a three-dimensional medium capable of providing high airflow, dirt capacity, and filtration efficiency without sacrificing engine protection.

K&N’s rugged synthetic air filter media is pleated and placed between two powder-coated aluminum screens which is then held between a top plate or molded urethane end cap and molded urethane seal. These ends are molded into a powder-coated steel cage to help withstand extreme temperatures and pressure. This ensures that a K&N commercial grade diesel air filter will not collapse or lose its seal under the high levels of compression that may be encountered in large turbo diesel applications.

K&N Heavy Duty Diesel Air Filters are designed to improve performance of HD diesel engines and when restriction becomes too high, simply wash with K&N degreaser and it’s ready to go

K&N Heavy Duty Diesel Air Filters are designed to improve performance of HD diesel engines and when restriction becomes too high, simply wash with K&N degreaser and it’s ready to go

K&N HD diesel air filters are nearly indestructible and after applying the special K&N degreaser 99-0638 they can be sprayed clean with pressure washers or power sprayers

K&N HD diesel air filters are nearly indestructible and after applying the special K&N degreaser 99-0638 they can be sprayed clean with pressure washers or power sprayers

K&N Heavy Duty Diesel Air Filters are designed to improve performance and when air filter restriction becomes too high, simply wash the filter and it’s ready to go again. These filters are nearly indestructible and after applying the special K&N degreaser 99-0638 they can be sprayed clean with pressure washers, and power sprayers. The filter does not even have to be completely dry to be re-installed. K&N replacement Heavy Duty Diesel Air Filters do not require filter oil.

The easiest way to find the proper K&N Replacement Heavy Duty Diesel Air Filter for your HD class 4-8 application is by using the filter you already have to perform a K&N HD diesel air filter cross reference. An air filter cross reference should be for comparison of filters with similar dimensions. Also, please keep in mind that some filters are available in either standard or reverse airflow directions. Please call K&N’s customer service department at 1-877-AIR-FILTER for assistance when choosing the appropriate replacement air filter.


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K&N Engineering in Riverside California is the world's leading manufacturer of washable performance air filters and air intake systems. K&N invented the reusable high flow cotton air filter in 1969 and has been perfecting the technology ever since. K&N is a world class filtration company selling air filters, oil filters, and intakes in over 30 countries. K&N sells over 5,000 products designed for cars, trucks, motorcycles, engines, and industrial applications. From their Million Mile Warranty to their Consumer Protection Pledge, K&N stands behind their products and their consumers 100%. The distinctive K&N logo represents performance from one of the original performance companies. For more information, visit knfilters.com.