The K&N RU-1041 is a round, tapered universal clamp-on air filter from K&N's High-Flow Original line. It uses cotton gauze media with a rubber top and a centered flange, so it can replace a stock intake element on a wide range of applications. Because it is washable and reusable, you can clean and re-oil it instead of buying a new disposable paper filter each service interval. The manufacturer also backs it with a 1-year limited warranty. Its published specs do not include a horsepower or airflow figure, so the case for buying it rests on reuse and durability rather than a dyno number.
Since this is a universal fit, the purchase decision depends on measurement. Confirm that your intake opening accepts a 6 in flange inside diameter and that the 7.5 in base and 7.5 in height clear your airbox and hose. Search terms enthusiasts commonly use include "washable round tapered cotton gauze air filter," "6 inch flange clamp-on air filter," and "K&N RU-1041 re-oil 50 ml." Vehicle-specific fitment is not listed on the manufacturer's spec sheet, so confirm applications with the manufacturer before ordering.
The manufacturer specifies a re-oiling amount of 1.67 oz (50 ml). Use a K&N-compatible filter oil and apply it evenly across the gauze.
The manufacturer lists the RU-1041 as washable. Cleaning intervals vary with driving conditions, and the manufacturer's cleaning schedule was not confirmed in this research, so check with the manufacturer for its recommended interval.
The manufacturer lists a 1-year limited warranty on the RU-1041.
This is a universal clamp-on filter, so the main install task is a fit check before you remove the old element. Measure the intake opening and confirm it matches the 6 in flange inside diameter and 1 in flange length. Check that the 7.5 in base and 7.5 in height have room in your airbox. After cleaning, re-oil the gauze with 1.67 oz (50 ml) before reinstalling. The manufacturer's install instructions were not located during research, so follow the guidance packed with the part and confirm steps with the manufacturer.
