Description
The K&N Filters Universal Rubber Air Filter – 3″ FLG x 6″ B x 4″ T x 5″ H (KNNRU-3580) is designed for performance enthusiasts who need a flexible, durable, and washable air filter solution. This filter is built to accommodate a wide range of inlet sizes, making it ideal for universal applications. With its rubber construction and multi-diameter fitment, it supports 3-inch, 4-inch, 5-inch, and 6-inch connections, offering convenience and compatibility. It’s an excellent choice for customizing or upgrading air intake systems.
Features and Specifications:
- Flange Inside Diameter: 3 inches
- Base Outside Diameter: 6 inches
- Top Outside Diameter: 4 inches
- Height: 5 inches
- Flange Length: 1.75 inches
- Flange Type: Centered
- Air Filter Shape: Round
- Top Style: Rubber
- Engineered Power: Advanced air filter media enhances horsepower, acceleration, and overall engine performance.
- Superior Protection: Four layers of premium cotton gauze with a specialized tacking agent trap harmful contaminants effectively.
- Durable Construction: Built with high-quality materials and precision manufacturing for long-lasting performance.
- Long Service Life: Under normal highway conditions, it requires cleaning only every 75,000 miles, equivalent to about five years.
- Easy Installation: Pre-oiled and ready to use, making it a simple and cost-effective upgrade for better performance.
- Versatile Fitment: Designed for compatibility with a wide range of applications.
- Eco-Friendly: Reusable design helps reduce landfill waste from disposable filters.
- Reliable Warranty: Backed by a 1-year limited warranty for peace of mind.






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