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K&N E-3980 Air Filter

Replacement Filters > Custom Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   1 Customer Review
  • Replacement air filter for specific RK Series air cleaner assemblies
  • Designed to boost horsepower and rate of acceleration
  • Washable and reusable
  • High air flow filter media provides exceptional filtration
  • Million Mile Limited Warranty®
The K&N replacement air filter for RK Series air cleaner assemblies is designed to increase horsepower and acceleration while providing excellent filtration. The air filter is washable and reusable and designed to be used as a replacement air filter for specific K&N RK Series air cleaner assemblies for Harley-Davidson® motorcycles. The air filter is covered by the famous K&N Million-Mile Limited Warranty.

[More Information on K&N RK Series High-Flow Air Intakes for Harley-Davidson® Motorcycles]

Available Information

Product Specifications

Air Filter ShapeOval
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.39 oz (11 ml)
Height2.188 in (56 mm)
Inner WireNo
Outside Length8.813 in (224 mm)
Outside Width6.188 in (157 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height3.63 in (92 mm)
Product Box Length8.5 in (216 mm)
Product Box Width8.5 in (216 mm)
Product StyleUnique Air Filters
Top Material/FinishBlack Powder Coated
Top StyleMetal
Weight1.5 lb (0.7 kg)

K&N E-3980 Air Filter Product Reviews

Wednesday, June 22, 2016 - Part E-3980
I had a (Brand Name) filter on my 2003 HD Electra Glide Ultra Classic TC88 but it did not idle good. I saw the ad for K&N increases horsepower and torque with almost 10 hp and 10 ft lb of torque. It is idling better and more responsive on the throttle. I will see if it helps my gas mileage? Which it should since I am getting more air.

Randy A. James
Kannapolis, North Carolina