Universal Rubber Filter

The K AND N ENGINEERING Universal Rubber Filter RU-2420 is a reusable air intake element engineered for custom and modified vehicles where intake diameter and filter positioning demand flexible solutions. Whether you're building a high-flow induction system on a street machine, tuning a performance truck, or fabricating a non-standard cold-air setup, this clamp-on design adapts to your unique airbox configuration without requiring OEM-specific housings. Mechanics and enthusiasts choose reusable cotton filters like this one because they deliver sustained airflow gains over the vehicle's lifetime while eliminating the waste cycle of disposable paper elements.

Built with premium reusable cotton media, the Universal Rubber Filter features a 5-inch diameter opening and 3-inch tall profile, allowing it to fit diverse intake manifold geometries and custom ducting layouts. The 3-inch flange provides a solid clamping surface for hose clamps or bracket mounts, while the red-finished construction signals durability and corrosion resistance in engine bay environments. The cotton construction traps contaminants effectively while maintaining low restriction—a critical advantage when you've already invested in intake tuning and carburetor or fuel injection optimization. At 0.95 lbs, it adds negligible weight while improving throttle response compared to stock restrictive assemblies.

This filter excels in street rods, vintage muscle car restorations, engine swaps, and turbo or supercharger installations where OEM air cleaner assemblies don't fit the modified engine bay. Mechanics appreciate its universal clamp-on design because one unit handles multiple platform conversions across a shop's customer base. To maintain peak performance, service the filter periodically with K AND N reusable filter cleaner and oil; the cotton media withstands hundreds of cleaning cycles, translating to years of service life and cost savings versus buying disposable replacements.