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

SKU: KNNE-3975

Engine Air Filter

KN UTV Drop In Air Filters...

K&n Engineering

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

SKU: KNNE-3975

Engine Air Filter

KN UTV Drop In Air Filters...

Sale ends in Calculating... Mon 19 Oct, 9:49 pm AEST

Limited Availability from MFR Limited stock available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical orders of this part. This item is not held in our own warehouse, and availability and release timing may vary depending on manufacturer stock movements and processing at the time of ordering.

We accept

Description

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.

Part Type

Engine Air Filter

Data: v4.2 - Upd: 2026-10-18 20:09:15

Features

Designed to boost horsepower and rate of acceleration
High air flow filter media provides exceptional filtration
Million Mile Limited Warranty®
Replacement air filter for specific RK Series air cleaner assemblies.
Washable and reusable

Specifications

Reference Information

Brand Name/s	K&n Engineering
StreetFX SKU	knnE-3975
SFX Item ID	5356788
Supplier Item Code	5356788
Manufacturer SKU	E-3975
Manufacturer UPC	24844245014
Alternative References	KANE-3975, RK-3931