K&N Filters universal rubber air filter details
K&N Filters Universal Rubber Air Filter – 2-7/16"FLG 4-1/2×3-3/4B 3-1/2×2-1/2T 2-3/4H (KNNRU-2780)
The K&N Filters Universal Rubber Air Filter – 2-7/16"FLG, 4-1/2" X 3-3/4"B, 3-1/2" X 2-1/2"T, 2-3/4"H (KNNRU-2780) is built to fit a wide range of intake systems with a secure rubber flange and oval tapered body. Its multi-size dimensions allow compatibility in custom and universal applications, including automotive and small engine use. Designed by K&N Filters for durability and consistent airflow, this filter offers long-term performance and a solid fit in tight configurations.
Features and Specifications:
Air Filter Material: Cotton Gauze
Air Filter Shape: Oval Straight
Flange Inside Diameter: 2-7/16"
Base Dimensions: 4-1/2" x 3-3/4"
Top Dimensions: 3-1/2" x 2-1/2"
Filter Height: 2-3/4"
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.
Product identification
- Brand: K&N Filters
- Model / MPN: KNNRU-2780




