Round Air Filter

The K&N Engineering Round Air Filter (model 62-1600RD) is a universal clamp-on intake element engineered for automotive enthusiasts seeking measurable airflow improvements and engine efficiency gains. This reusable cotton filter addresses a core performance bottleneck: restrictive OEM air filters that rob horsepower and throttle response. Whether you're tuning a street machine, upgrading a daily driver, or building a custom engine bay, this round filter delivers both durability and real-world performance without sacrificing engine protection.

K&N's proprietary oiled cotton media design maximizes surface area while maintaining superior filtration—trapping contaminants while allowing significantly higher CFM flow compared to paper alternatives. The conical geometry (2-inch base, 1.5-inch top, 1.75-inch height) optimizes velocity and particle separation, reducing turbulence during high-RPM operation. The dual-flange design (0.375 and 0.5-inch options) accommodates various clamp configurations and intake tube diameters, making installation straightforward on most custom or modified intake manifolds. Weighing just 0.17 pounds and measuring 4.15 x 6.1 inches overall, this compact element fits tight engine bays without demanding relocated components.

Mechanics and tuners favor K&N filters for their reusability—clean and re-oil the element every 50,000 miles instead of replacing disposable filters repeatedly, reducing long-term costs. The universal clamp-on design suits cold-air intakes, custom carburetors, fuel-injected builds, and aftermarket intake systems across domestic and import platforms. Installation requires only a hose clamp or band clamp; no modifications to existing intake tubes are necessary. Perfect for street rods, truck builds, performance daily drivers, and engine swap projects where flow optimization matters.