K AND N ENGINEERING RU-4250 K&N Engineering RU-4250 Universal High-Flow Conical Air Filter

Improve airflow to your engine with the K&N Engineering RU-4250 Universal High-Flow Air Filter. This reusable cotton filter features a conical design and clamp-on installation for applications requiring a compact, high-performance intake solution. Its red filter media and universal fit make it suitable for a wide range of custom intake systems, off-road vehicles, powersports applications, and other compatible setups.
The RU-4250 is designed to provide efficient air filtration while supporting increased airflow compared with restrictive standard paper filters. The reusable cotton construction can be cleaned and re-oiled as needed, helping extend service life and reduce replacement frequency when properly maintained. A durable flange provides a secure connection to compatible intake tubing, while the tapered shape helps optimize installation where space and airflow direction are important considerations.
Designed for straightforward installation, this K&N Engineering air filter attaches with a clamp-on connection and is sold individually. Verify the base diameter, top diameter, filter height, and flange diameter against your intake system before ordering to ensure proper clearance and fit. The RU-4250 is a practical choice for enthusiasts and builders seeking a reusable, high-flow air filter for a universal application.

Features:

• Brand: K&N Engineering

• Part Number: RU-4250

• Filter Type: High-flow conical air filter

• Installation: Clamp-on design for compatible intake systems

• Filter Media: Reusable cotton construction

• Color: Red

• Application: Universal

• Design: Tapered conical shape

• Quantity: Sold individually