The K&N RU-2960 is a red, round tapered universal clamp-on air filter from K&N Engineering, built on the brand's reusable cotton gauze element. Its 6 in flange opening, 7.5 in base, 5 in top, and 5 in height suit intake tubes in that size range. The manufacturer describes a molded, pliable rubber flange that absorbs vibration and holds the filter securely, and it can be stretched slightly to bridge between nearby sizes.
Over stock paper elements, the main case for this filter is that it is built to be cleaned and reused instead of thrown away. The manufacturer says its four layers of cotton gauze, treated with a tacking agent, form a mesh designed to trap contaminants while the media is tuned to support horsepower and throttle response. Because it is a universal fit, the buyer carries the fitment responsibility: measure the intake opening and confirm the clamp space before ordering. Searches for a 6 inch flange cotton gauze air filter, a reusable round tapered performance intake filter, or a universal clamp-on K&N RU-2960 should lead to this part, which is pre-oiled and ships ready to use.
The manufacturer lists a re-oiling amount of 1.23 oz (36 ml). Use K&N's recommended filter oil and apply it evenly across the gauze before reinstalling.
The manufacturer says the rubber flange can be stretched up to 1/16 of an inch (1.5 mm) to fit between sizes. Larger differences than that are outside the manufacturer's stated range, so measure the intake before purchase.
The manufacturer's product page lists a 1 year limited warranty. Warranty terms vary across sources, so confirm current coverage directly with the manufacturer.
