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K&N Universal Chrome Oval Tapered Air Filter - 2in Flg ID x 4in OS L 3in OS W x 2.75in H

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The K&N RC-1824 is a universal clamp-on air filter with a chrome metal top and cotton gauze filter media, sold for applications that need a 2-inch flange. Per the manufacturer's spec table, the body measures 4 inches along the base, 2.719 inches across the base width, and 2.75 inches tall, with a 2-inch flange inside diameter and a half-inch flange offset. Because this is a universal part rather than a vehicle-specific one, the flange diameter, offset, and body footprint are the numbers to match against your existing intake before you order. Long-tail searches for a chrome oval tapered K&N universal filter with a 2-inch flange usually point to this exact part.

The reason to choose this filter over stock paper is reuse. The manufacturer describes its universal filters as washable and reusable, so an owner who rides dusty trails can clean and re-oil the element instead of buying a new one each time. Performance gains are less certain. Owners on user forums disagree: one tester found that a stock paper element moved more air than a K&N element, while other riders report that K&N filters flow well. Treat this filter as a durable, reusable upgrade first and a power upgrade second, and expect results to depend on your intake and carburetor setup.

  • Part Number: RC-1824
  • Product Style: Oval tapered universal air filter
  • Filter Material: Cotton gauze
  • Top Material / Style: Chrome / Metal
  • Top Outside Length: 3.000 in
  • Top Outside Width: 2.000 in
  • Base Outside Length: 4.000 in
  • Base Outside Width: 2.719 in
  • Height: 2.750 in
  • Flange Inside Diameter: 2.000 in
  • Flange Length: 0.625 in
  • Flange Offset: 0.500 in
  • Flange Angle: 0 degrees
  • Washable: Yes

FAQ:

Does this filter list specific vehicles it fits?

No. The manufacturer presents the RC-1824 as a universal filter and I did not find a vehicle application list in its data. Confirm fit by comparing the 2-inch flange diameter, 0.625-inch flange length, and 0.5-inch offset against your intake, then check that the 2.75-inch height clears nearby parts.

Will I need to change jetting after installing it?

The manufacturer's install guidance for a different K&N filter says tuning or jetting adjustments may be required if engine modifications have been made. I did not find confirmation from the manufacturer that this specific RC-1824 needs or avoids jetting changes, so verify with the manufacturer or a tuner before riding.

How is the filter cleaned and maintained?

The manufacturer describes its universal K&N filters as washable and reusable. I did not confirm a step-by-step cleaning or re-oiling procedure specific to the RC-1824, so follow the manufacturer's cleaning instructions for K&N filters before servicing it.

Installing it yourself

This is a clamp-on swap that needs only basic hand tools for the clamps and airbox fasteners. Remove the stock element, clean the airbox and any sealing surfaces, seat the new filter's flange fully so unfiltered air cannot bypass it, and reinstall the airbox lid and tighten it. The manufacturer's install sheet for another K&N filter follows the same general sequence, and it stresses cleaning the sealing surfaces before installation. After the first ride, recheck the seal and clamps for leaks or loose fittings.

  • MPN: RC-1824
  • Manufactured by: K&N Engineering
  • Units per SKU: 1
  • In Stock: 3
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RC-1824
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