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Home / Intake & Filtration / Air Filters - Direct Fit / K&N Universal Custom Air Filter - Oval Shape 9.313in OD / 2.375 Height
K&N Universal Custom Air Filter - Oval Shape 9.313in OD / 2.375 Height
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K&N Engineering

K&N Universal Custom Air Filter - Oval Shape 9.313in OD / 2.375 Height

PART E-3988CATEGORY Air Filters - Direct Fit
$68.99
$68.99
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.

REPLACEMENT ELEMENT; RK-3952; RK-3953

Custom Air Filter

Features

Million Mile Limited Warranty®

Million Mile Limited Warranty

Manufacturer notes

Associated products: 99-5000 Filter Care Service Kit Aerosol

Supplier category
Air Filters
Supplier subcategory
Air Filters - Direct Fit
UPC / barcode
024844366818
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
Yes
Freight delivery required
No
Powersports product
No
More manufacturer information

Other product descriptions

K&N Universal Custom Air Filter - Oval Shape 9.313in OD / 2.375 Height

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.

Additional manufacturer information

Engine Air Filter

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