K&N Engineering E-3988 Universal Oval Custom Air Filter for Harley-Davidson RK Series

Description

The K&N Engineering E-3988 universal custom air filter is designed specifically for Harley-Davidson RK Series air cleaner assemblies. Crafted to deliver increased horsepower and improved acceleration, this filter ensures your motorcycle maintains optimal airflow while providing excellent filtration to protect your engine from dust and debris. Its reusable and washable design makes it a cost-effective choice for long-term performance and maintenance. The oval shape with a 9.313-inch outer diameter and 2.375-inch height fits precisely into compatible air cleaner housings, ensuring a secure fit and seamless integration with your motorcycle’s existing setup.
K&N’s renowned durability and performance are backed by the Million Mile Limited Warranty, giving you confidence in this high-quality replacement part. The filter’s construction allows it to withstand the rigors of riding and repeated cleaning, making it an essential upgrade for motorcycle enthusiasts seeking reliable performance and enhanced engine efficiency. Whether you’re upgrading for better power or replacing an aging filter, this model provides a perfect balance of filtration and airflow for Harley-Davidson bikes.
Designed with the rider’s needs in mind, the E-3988 filter meets strict standards for quality and performance. Its versatile oval shape accommodates a variety of air cleaner configurations, and its robust construction ensures consistent filtration over many miles of riding. Easy to install and maintain, this air filter is a practical and effective solution for motorcycle owners looking to optimize their bike’s performance while ensuring their engine remains protected under demanding conditions.

Features:

• Designed specifically for Harley-Davidson RK Series air cleaner assemblies

• Increases horsepower and acceleration for improved bike performance

• Washable and reusable filter for long-term savings and eco-friendliness

• Constructed with durable materials to withstand rigorous riding conditions

• Covered by K&N’s Million Mile Limited Warranty for peace of mind

• Oval shape with a 9.313-inch outer diameter and 2.375-inch height for a precise fit

• Provides excellent filtration to protect your engine from dust and debris

• Easy to install and maintain, ideal for motorcycle enthusiasts seeking reliable upgrades