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

The K&N High-Flow Original Universal Clamp-On Air Filter (RU-1044) is a washable, reusable cone-style intake filter built to increase airflow and deliver durable, long-lasting filtration for a wide range of engines.

Designed for universal clamp-on applications, this tapered round K&N filter combines multi-layer cotton gauze media and a pliable molded rubber flange to fit many custom and replacement setups. Its reusable design eliminates frequent disposable-filter changes and is engineered to tolerate vibration, heat, and repeated cleanings while helping maintain consistent airflow. The RU-1044 is sized with a 6-inch flange diameter, 8-inch overall height, and a 0.625-inch flange length to suit numerous performance and maintenance needs.

How will this filter affect my engine's breathing and responsiveness?

The K&N High-Flow media is built to allow increased air volume compared with many standard paper elements, which can improve throttle response and maintain steady airflow under load. The layered cotton gauze captures contaminants while promoting unrestricted intake, making it a common upgrade for enthusiasts and custom installs.

• Four-layer cotton gauze filtration for improved airflow and particle capture
• Engineered media to support horsepower and acceleration under typical driving
• Pre-oiled treatment for immediate performance after install
• Reusable design maintains airflow after cleaning cycles

What are the physical dimensions and fitment details I should check?

This model is a round tapered (cone) clamp-on filter with a 6-inch flange diameter, 8-inch filter height, and a 0.625-inch flange length—measure your intake pipe or adapter to confirm compatibility. The pliable rubber flange compresses slightly for a secure clamp fit and helps isolate vibration from the intake assembly.

• Flange diameter: 6 inches — measure mating pipe or adapter
• Filter height: 8 inches — consider engine bay clearance
• Flange length: 0.625 inches — allows clamp-on attachment
• Shape: round tapered cone — common for performance intakes

How do I care for and maintain this reusable air filter?

K&N filters are designed to be cleaned and re-oiled rather than thrown away, which lowers ongoing cost and waste. Under normal highway driving they typically require inspection and cleaning cycles spaced far apart; proper cleaning restores filtration performance and airflow.

• Clean every ~75,000 miles under average highway conditions (inspection recommended sooner in dusty environments)
• Use K&N-approved cleaning and oiling products for best results
• Dry and re-oil according to instructions before reinstalling
• Inspect the rubber flange and pleats for damage at each service

What materials and warranties back this product?

The RU-1044 uses multiple layers of premium cotton gauze, treated with a tackifying agent to trap contaminants without severely restricting airflow, and a molded rubber flange for secure fitment. K&N manufactures these filters in the USA and supports them with a limited warranty.

• Premium cotton gauze filtration media, multi-layer construction
• Molded pliable rubber flange to absorb vibration
• Made in USA for consistent quality control
• 1-Year limited warranty from K&N

Who is this for: The K&N RU-1044 clamp-on air filter is ideal for vehicle owners, hobbyists, and custom installers seeking a durable, reusable performance filter for aftermarket intakes, carbureted setups, or retrofits where a clamp-on cone fits. Choose this filter if you want a long-lived, serviceable element that can improve airflow, reduce disposable waste, and fit many universal applications while keeping installation straightforward.