The K&N RB-0910 is a round, straight universal clamp-on air filter built for custom intake work rather than one specific vehicle. The manufacturer designs its universal line for uses ranging from race cars to tractors, and this model pairs a 3-inch angled flange with a 5-inch-tall cotton gauze element. Its molded rubber flange is meant to absorb vibration while gripping the intake tube, which makes it a practical pick for a 3-inch cold air intake or a custom velocity stack build.
Compared with a disposable paper element, this filter is washable and reusable, so you pay once and clean it rather than buying a replacement every service interval. The manufacturer describes four layers of premium cotton gauze, treated with a tacking agent, as the filtration media, and it backs the filter with a one-year limited warranty. For a track or performance buyer, that combination of airflow-focused media and a reusable design is the main reason to spend more than on a basic paper replacement.
Fitment starts with the intake. The 3-inch flange inside diameter has to match your tube, and the manufacturer says the flange can stretch up to 1/16 inch to bridge between sizes, so measure before ordering. Because the filter is universal, the install is mostly a clamp-on swap with no vehicle-specific bracket. Keep the 0.55 oz (16 ml) re-oil amount in mind for your first cleaning cycle, and search terms like "3 inch 5 degree angled flange air filter" or "clamp-on cotton gauze universal intake filter" will help you find matching hardware.
The manufacturer lists a 3-inch flange inside diameter and says the flange can stretch up to 1/16 inch to fit in-between sizes. Measure your tube's outside diameter at the clamp point before ordering, especially if it falls between standard sizes.
Yes. The manufacturer describes this filter as washable and reusable. Its guidance for other K&N filters calls for the manufacturer's recharger service kit to clean and re-oil the element, and the same approach applies here.
The manufacturer provides a one-year limited warranty on the RB-0910.
This is a universal filter, so there is no vehicle-specific mounting bracket. The job is a clamp-on swap into your intake tube, which most home mechanics can handle with basic hand tools. Because the flange only stretches about 1/16 inch, check that the tube is close to 3 inches before you start, and confirm the flange seats fully and the clamp holds it square. The manufacturer's install sheets for its other filters stress cleaning the sealing surfaces and checking that the seal is tight before you drive, and that advice is worth following here. Re-oil the element per the 0.55 oz (16 ml) amount when you first clean it.
