K&N Universal Clamp-On Air Filter 2.25in Flange ID 3.5in OD 2in Height

K&N Universal Clamp-On Air Filter 2.25in Flange ID 3.5in OD 2in Height

Marsoni

M251S

$67.19

Get it in 3 business days with 1 day shipping. Friday, May 29

K&N Universal Clamp-On Air Filter 2.25in Flange ID 3.5in OD 2in HeightSKU: RU 1900 UPC: 024844396488 K&N Universal Clamp On Air Filter 2. 25in Flange ID 3. 5in OD 2in Height K&N RU 1900 universal clamp on air filter fits racing vehicles radio controlled cars generators snowmobiles tractors and custom intakes with 2. 25 inch flange ID. This high flow filter delivers more air to the engine for better horsepower and acceleration while providing excellent filtration. Constructed with 4 ply cotton gauze and molded rubber

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Been using these for months, great quality. No issues what so ever. I compared price to the 2 main big box stores and this is the best for your bucks. You get a lot more and they are of the same quality. I used to get mine from a big box store with military discount of 10% and this is still a better deal. They fit exactly like the filter I took out, so size is the same. I live FL and run my AC constantly. These last about 2-3 months each. They do no lose their rigidity. They are built with very high quality material. They catch a lot of dust, you can see how dirty they are when replaced. PROS - great quality and last 2-3 months in my AC running constantly - you get a lot for your money when compared to the big box stores - catch a lot of dirt, filters are really dirty after use - very rigid which makes it easy to installation - reinforced wire mesh CONS - None

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Reviewed in the United States on May 31, 2026

Verified Purchase

Arlo

Los Angeles, US

★★★★★ 5

Top quality filters at a good price.

Style: 20x30x1

These filters are good quality. They are reinforced and hold their shape. They fit perfectly in my filter holder. The thing I like is that the filters were bundled together and shipped in a sturdy box. Other filters I have ordered showed up in a flimsy box and were damaged.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 22, 2026