K&N E-3984 Air Filter

Replacement Filters > Custom Air Filter

5.0 out of 5 stars 1 Customer Review

SHARE WITH A FRIEND

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

Air Filter Test Data

Product Specifications

Air Filter Shape	Round Tapered
Filter Material	Cotton Gauze
Flanges	None
Height	3.25 in (83 mm)
Package Contents	1 Air Filter
Package Quantity	1
Product Style	Unique Air Filters
Base Outside Diameter	6.25 in (159 mm)
Top Outside Diameter	5.531 in (140 mm)
Top Style	Metal
Top Material	Zinc
Weight	0.9 lb (0.4 kg)
Filter Re-Oiling Amount	0.53 oz (16 ml)
Product Box Height	3.5 in (89 mm)
Product Box Length	6.31 in (160 mm)
Product Box Width	6.56 in (167 mm)
Inner Wire	No

Accessories / Related Items

99-5050 - Filter Care Service Kit - Squeeze Red

K&N E-3984 Air Filter Product Reviews

Review part E-3984

Friday, September 22, 2017 - Part E-3984

Website is very user friendly and the service and product are second to none as usual. If you're not running K&N, you're not in the running. Michael from OZ

Michael Humphreys

Avenell Heights, Australia