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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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K&N Engineering
K&N RK Series Universal Oval Replacement Air Filter - 9.313in OD x 2.375in H (E-3988)
$68.99
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
This K&N RK Series replacement air filter (E-3988) is engineered to improve airflow and filtration for specific Harley-Davidson motorcycles equipped with K&N RK Series air cleaner assemblies. Designed for high-performance applications, the oiled cotton media provides low restriction to support increased horsepower and throttle response without compromising engine protection.
The filter features a precise oval shape and is fully washable and reusable, offering a sustainable, long-term solution compared to disposable paper elements. Each filter is built for durability and is backed by the K&N Million-Mile Limited Warranty.
- Manufacturer Part Number: E-3988
- Shape: Oval
- Outer Diameter: 9.313 in (237 mm)
- Height: 2.375 in (60 mm)
- Filter Material: Oiled Cotton Gauze
- Compatibility: Specifically designed for K&N RK Series air cleaner assemblies
- Maintenance: Washable and reusable for extended service life
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Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom right of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
K&N RK Series Universal Oval Replacement Air Filter - 9.313in OD x 2.375in H (E-3988)
$68.99
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
30 Days Satisfaction Guarantee
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$68.99
$68.99
$68.99
This K&N RK Series replacement air filter (E-3988) is engineered to improve airflow and filtration for specific Harley-Davidson motorcycles equipped with K&N RK Series air cleaner assemblies. Designed for high-performance applications, the oiled cotton media provides low restriction to support increased horsepower and throttle response without compromising engine protection.
The filter features a precise oval shape and is fully washable and reusable, offering a sustainable, long-term solution compared to disposable paper elements. Each filter is built for durability and is backed by the K&N Million-Mile Limited Warranty.
- Manufacturer Part Number: E-3988
- Shape: Oval
- Outer Diameter: 9.313 in (237 mm)
- Height: 2.375 in (60 mm)
- Filter Material: Oiled Cotton Gauze
- Compatibility: Specifically designed for K&N RK Series air cleaner assemblies
- Maintenance: Washable and reusable for extended service life
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