Description

The K&N Filters Universal XStream Clamp-On Air Filter – 2-7/16″FLG 4″OD 4-3/4″H (KNNRX-4040-1) is designed to improve airflow and engine performance across a wide range of applications. This high-performance clamp-on air filter features K&N’s washable and reusable oiled cotton gauze media, delivering excellent filtration while maintaining optimal airflow. The 2-7/16-inch flange fits securely onto intake tubes, while the 4-inch outside diameter and 4-3/4-inch height provide a compact yet efficient filtration solution. This filter combines durability with performance and is ideal for universal and custom intake setups.

The XStream top design increases surface area, enhancing airflow into the engine. With a robust construction and simple installation, it’s a dependable upgrade or replacement for air intake systems.

Features and Specifications:

Shape: Round
Top Style: XStream
Flange Inside Diameter: 2-7/16 inches
Outside Diameter (OD): 4 inches
Height: 4-3/4 inches
Engineered Power: State-of-the-art air filter media boosts horsepower and acceleration while enhancing overall engine performance.
Rugged Construction: Made from durable, premium materials and advanced construction methods for long-lasting performance.
4 Layers of Protection: Premium cotton gauze treated with a specialized tacking agent blocks and traps harmful contaminants.
Low Maintenance: Clean every 75,000 miles (5 years) under normal highway driving conditions.
Reusable Design: Replacing disposable filters with washable, reusable air filters saves up to $125 over 200,000 miles.
Ultimate Longevity: Lifetime limited warranty on stock replacement filters (limitations apply).
Easy Installation: Pre-oiled and ready for quick, hassle-free installation into the factory air box.
Reduces Waste: This helps reduce landfill waste by eliminating the need for disposable air filters and packaging.