Description

The K&N Filters Universal Clamp-On Air Filter – 3-1/2″FLG, 6″B, 4-1/2″T, 9″H (KNNRU-3690) is built for high-performance engines that require superior airflow and filtration. Designed to fit a wide range of vehicles, this clamp-on air filter features a 3-1/2-inch flange, 6-inch base, 4-1/2-inch top, and 9-inch height. It uses K&N’s oiled cotton gauze media, which is washable and reusable, making it a long-lasting solution for improving engine performance and filtration efficiency.

Features and Specifications:

Air Filter Material: Cotton Gauze
Air Filter Shape: Round Tapered
Flange Inside Diameter: 3.5 in (89 mm)
Flange Inside Diameter: 3-1/2 inches
Base Outside Diameter: 6 inches
Top Outside Diameter: 4-1/2 inches
Overall Height: 9 inches
Engineered Power: Increases horsepower, acceleration, and overall engine performance.
Advanced Filtration: 4 layers of premium cotton gauze block and trap harmful contaminants.
Durable Build: Rugged, high-quality construction designed to last a lifetime.
Extended Use: Clean only every 75,000 miles under normal highway conditions.
Easy Install: Pre-oiled and ready for quick, cost-effective performance gains.
Universal Fit: Compatible with a wide range of vehicles and applications.
Eco-Friendly: Reusable design helps reduce landfill waste from disposable filters.
Warranty Coverage: Backed by a 1-Year Limited Warranty.