K&N High-Flow Clamp-On Universal Air Filter RU-1044 — 6" Flange, 8" Tapered Cone, Washable Reusable

The K&N High-Flow Original Lifetime Universal Clamp-On Air Filter (RU-1044) is a washable, reusable cone-style filter that increases airflow while providing durable, long-lasting engine protection.

This clamp-on air filter from K&N is engineered for hobbyists, mechanics, and aftermarket builders who need a reliable universal intake filter. Built with multiple layers of premium cotton gauze media and a molded pliable rubber flange, the RU-1044 is designed to boost airflow compared with disposable paper elements while remaining serviceable for the life of the vehicle. Its tapered round shape and 6-inch flange diameter make it suitable for many custom or replacement intake applications.

How does this filter affect engine performance?

The RU-1044 improves air delivery to the engine by using a multi-layer cotton gauze media that balances airflow and particle capture. Increased unrestricted airflow can help the engine breathe more easily, which may result in smoother throttle response and potential minor horsepower gains when paired with compatible intake systems.

• Four-layer cotton gauze for increased airflow and filtration.
• Special tacking agent to trap contaminants without overly restricting flow.
• Pre-oiled media ready for immediate installation.

How durable and maintainable is the K&N RU-1044?

Designed for longevity, this K&N clamp-on filter features rugged construction and a pliable rubber flange that resists vibration and tears. The washable, reusable design means you clean the filter instead of replacing it, lowering long-term ownership costs and reducing waste.

• Washable and reusable—clean approximately every 75,000 miles under normal highway driving.
• Molded rubber flange absorbs vibration and ensures a secure clamp-on fit.
• Manufactured with durable materials and a 1-year limited warranty.

Will this filter fit my custom or replacement intake?

The RU-1044 is a universal clamp-on style made to accommodate a wide variety of intake setups. With a 6-inch flange diameter and 0.625-inch flange length, it fits many standard intake pipes and adapters, especially in custom or performance applications.

• 6-inch flange diameter and 0.625-inch flange length for common intake tubes.
• Tapered round shape (8-inch height) suitable for cone-style intake arrangements.
• Works with clamp or adapter connections for aftermarket or custom installs.

What are the practical benefits of choosing a K&N reusable filter?

Switching to a reusable K&N filter reduces recurring replacement costs and lowers environmental impact from disposable filters. The pre-oiled media is easy to install and, with routine cleaning, will provide many years of service without frequent purchases.

• Fewer replacements—clean once every several years under typical driving conditions.
• Reduces landfill waste compared with disposable filters.
• Made in the USA with consistent quality and materials.

Who is this for: The K&N RU-1044 High-Flow Universal Clamp-On Air Filter is aimed at automotive enthusiasts, DIY mechanics, and anyone fitting custom or replacement intake systems who wants a dependable, reusable filter. It suits riders and drivers upgrading their intake for improved airflow without frequent filter replacements, plus builders who need a versatile cone-style element with a 6-inch inlet and an 8-inch overall height.