38-2001S - K&N Heavy Duty Washable Air Filter

Part # 38-2001S K&N Heavy Duty Washable Air Filter

***This is the Standard Air Flow Model***

All HD filters start with "38" and have either an "S" or "R" suffix
The 38 signifies the filter is a K&N HD air filter. The "S" and "R" at the end of the part number (i.e. 38-2001S or 38-2001R) signifies which way the air flows through the media. A filter with the "S" suffix, should be red on the outside and white on the inside, flowing the air from the outside inward, aka Standard. Whereas the "R" suffix filters, which should be white on the outside, will flow air from the inside outward, aka Reversed. The red color is to signify the direction of air flow because the media is designed to flow in one direction. K&N does not recommend using the filter to flow air in the opposite direction than designed.

Description:

Designed to Lower Restriction and Improve Horsepower
These commercial grade air filters are built from a new hybrid filter medium that incorporates some of the best characteristics of both cotton and synthetic non-woven technologies. They do not require any oil treatment and use a 3-D lofted filter surface to help reduce air filter restriction. Less restriction means more power and better engine efficiency. As air filter restriction goes up, an engine needs to expend energy "pulling" air through the filter. This is wasted energy that is no longer available for power at the wheels. Another air flow benefit with K&N HD air filters is that each time the air filter is washed, restriction is reduced whereas disposable air filters slowly increase in restriction throughout their service life.

Dimensions:

• Overall Height: 25-5/8"
• Largest Outside Diameter: 9-3/4"
• End Connection Outside Diameter: 6"
• Side Connection Outside Diameter: 6"

Cross Reference:

• Baldwin: PA2721
• Carquest: 88891
• Donaldson: P537447
• Farr: 62891001 & 062891001
• Fleetguard: AH1104 & AH8501
• Fram: CA7229
• Luber-Finer: LAF1828
• Napa: 6891
• Wix: 46891
• aFe: 70-10103

Common Applications*:

• Country Coach Inspire
• Some National Coaches
• Thor Presido
• Coachmen
• Tiffin Allegro Bus w/ Cummins ISC
• Tiffin Phaeton
• Damon Escaper
• Alpha See Ya Gold W/ Cummins ISC
• Fleetwood American Eagle
• Fleetwood American Dream
• Fleetwood American Revolution
• Fleetwood American Tradition
• Holiday Rambler Imperial (1996-2003)
• Some Monaco Coaches w/ Cummins ISB

*Always double check correct application by measurement or cross reference.