K&N Universal Clamp-on Air Filter 2in Flange ID 5-3/16in Base 3-1/2in Top 3-11/16in Height w/ Vent

K&N Universal Clamp-on Air Filter 2in Flange ID 5-3/16in Base 3-1/2in Top 3-11/16in Height w/ Vent

Marsoni

M251S

$75.99

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

K&N Universal Clamp-on Air Filter 2in Flange ID 5-3/16in Base 3-1/2in Top 3-11/16in Height w/ VentSKU: RU 9920 UPC: 024844396792 K&N Universal Clamp on Air Filter 2in Flange ID 5 3 16in Base 3 1 2in Top 3 11 16in Height w Vent The K&N RU 9920 universal clamp on air filter fits a broad range of equipment including racing vehicles, radio controlled cars, generators, snowmobiles, tractors and custom intakes with 2 inch ID flanges. Constructed with a 5 3 16 inch base OD, 3 1 2 inch top OD and 3 11 16 inch height plus integrated vent, this filter

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I’ve been using this device on my patio and it actually makes a noticeable difference. It’s compact, easy to carry around, and I like that it’s rechargeable. The coverage is decent for small outdoor areas, and the refills are simple to swap out. Perfect for camping or relaxing outside without constantly swatting bugs. Definitely worth it for the price

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Reviewed in the United States on April 27, 2026

Verified Purchase

Rodrigo Rodrigues zago

Waukegan, US

★★★★★ 1

The product doesn't work.

Color: Black 1 Devices 2 Refills, Color: Black 1 Devices 2 Refills

This product is completely useless. I turned it on, and flies swarmed all around it—even landing right on top of it. It's false advertising. Don't buy it.

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Reviewed in the United States on May 25, 2026

Verified Purchase

Cathy Hall

Bozeman, US

★★★★★ 5

Performance

Color: Black 1 Devices 2 Refills

It did a great job on my porch. It’s well worth it to get.

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Reviewed in the United States on May 15, 2026

Verified Purchase

Amazon Customer

Los Angeles, US

★★★★★ 5

Really works.

We love the whitening sticks as they are easy to use, and work.

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Reviewed in the United States on May 9, 2026

Verified Purchase

Mary Picard

Battle Creek, US

★★★★★ 5

It really worked!!!!

I wish I had taken a before picture. Was concerned that I needed a light to use to whiten teeth. You do not!! This is amazing! I put it on for about 5 minutes and can visibly see a difference!! Very happy with this product!

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Reviewed in the United States on April 15, 2026