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Home / Intake & Filtration / Air Filters - Drop In / K&N Unique Air Filter - Replacement Element for RK-3931
K&N Unique Air Filter - Replacement Element for RK-3931
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K&N Engineering

K&N Unique Air Filter - Replacement Element for RK-3931

PART E-3975CATEGORY Air Filters - Drop In
$83.99
$83.99
1

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Product information

Manufacturer information. Check the part number and installation requirements for your vehicle.

Supplier details checked 2026-09-23 · Test catalog

Some supplier details are unavailable for this product.

Product description

The K&N replacement air filter for RK Series air cleaner assemblies, designed for Harley-Davidson motorcycles, are designed to increase horsepower and acceleration while providing excellent filtration.

Unique Air Filter

Air Filter

Features

Replacement air filter for specific RK Series air cleaner assemblies.

High air flow filter media provides exceptional filtration

Designed to boost horsepower and rate of acceleration

Million Mile Limited Warranty®

Washable and reusable

Manufacturer notes

Associated products: 99-5000 Filter Care Service Kit Aerosol

Supplier category
Air Filters
Supplier subcategory
Air Filters - Drop In
UPC / barcode
024844245014
Units per product
1
Supplier Proposition 65 status
Y
Supplier EPA status
N/A
Air freight prohibited
No
Not CARB approved
No
CARB acknowledgement required
No
Freight delivery required
No
Powersports product
Yes
More manufacturer information

Other product descriptions

K&N Unique Air Filter - Replacement Element for RK-3931

About the manufacturer

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.

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.

Additional manufacturer information

Engine Air Filter

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K&N Unique Air Filter - Replacement Element for RK-3931 | Q40 Motorsports