Description
The K&N Filters Universal Clamp-On Air Filter – 2.75″ FLG x 4.75″ B – Round Tapered (KNNRU-5144) is designed for performance and durability. Engineered with a 2.75-inch inside diameter and a 4.75-inch outside diameter, this reusable clamp-on air filter fits a wide range of intake systems. Its round tapered design improves airflow while protecting your engine from harmful contaminants. Ideal for custom and racing applications, the rubber flange ensures a tight, flexible fit. The high-flow cotton gauze media is washable and reusable, making it a long-lasting upgrade for your vehicle’s intake system.
Features and Specifications:
- Flange Inside Diameter: 2.75 in (70 mm)
- Base Outside Diameter: 4.75 in (121 mm)
- Top Outside Diameter: 4 in (102 mm)
- Height: 8 in (203 mm)
- Engineered Power: Advanced air filter media enhances horsepower, acceleration, and overall engine performance.
- Superior Protection: Two 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 50,000 miles, equivalent to about three 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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