Universal air filter details
K&N Filters Universal Air Filter – 3-1/2" FLG x 8-1/2"x5-1/4" B x 6-1/4"x4" T x 5-1/2" H (KNNRU-5040)
The K&N Filters Universal Air Filter – 3-1/2" FLG x 8-1/2"x5-1/4" B x 6-1/4"x4" T x 5-1/2" H (KNNRU-5040) is engineered for performance and durability, making it an ideal replacement or upgrade in many automotive intake systems. Designed with a 3.5-inch flange, this filter fits a wide range of setups. The oval base measures 8.5 x 5.25 inches, and the top is 6.25 x 4 inches. Its total height is 5.5 inches, offering balanced airflow and dust-holding capacity. Whether you're maintaining or upgrading your engine, this filter delivers consistent, reliable air intake performance. Compatible with many universal applications, it supports improved airflow for enhanced engine efficiency and power.
Features and Specifications:
Flange Inside Diameter: 3.5 in (89 mm)
Base Outside Diameter: 8.5 in (216 mm) x 5.25 in (133 mm)
Top Outside Diameter: 6.25 in (159 mm) x 4 in (102 mm)
Height: 5.5 in (140 mm)
Flange Length: 0.75 in (19 mm)
Flange Type: Centered
Air Filter Shape: Oval-Straight
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-5040
