K&N Universal Rubber Filter 4.5in Flange ID / 5.875in Base OD / 5.125in Top OD / 5in Height

K&N Universal Rubber Filter 4.5in Flange ID / 5.875in Base OD / 5.125in Top OD / 5in Height

Marsoni

M251S

$63.19

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

K&N Universal Rubber Filter 4.5in Flange ID / 5.875in Base OD / 5.125in Top OD / 5in HeightSKU: RU 4260 UPC: 024844045355 K&N Universal Rubber Filter 4. 5in Flange ID 5. 875in Base OD 5. 125in Top OD 5in Height K&N RU 4260 universal clamp on air filter fits racing vehicles radio controlled cars generators snowmobiles tractors and custom intakes with 4. 5in flange. Molded rubber flanges absorb vibration stretch up to 1 16in for secure seal and allow easy installation on angled or offset intakes. Washable reusable design with high flow cotton

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So since they were listed as down alternative, I was interested to see if they had that artificially puffy feel to them. They do get puffed up really well after a day. And the fabric is cool and comfortable. I do feel like these have good quality stuffing and the cover feels nice. I'm a back sleeper and it's just the right amount of bulk under my neck. I usually bunch the pillow up a little bit there so there's a little more pressure under my neck but with these it just felt good to lay on it without having to bunch it up in any special way. So I would definitely recommend them. So far I'm really liking having these pillows.

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Reviewed in the United States on April 20, 2026

ScienceWriter

Lowell, US

★★★★★ 5

Nice and Fluffy

Size: Standard

These "down alternative" pillows have been a winner for me. Came two to a package and once they have a couple of days our of the vacuum packaging are nice and fluffy with no noticable odor. Just the right amount of "spring" to them for my taste. Also don't overheat my face/neck as traditional down pillows sometimes have.

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Reviewed in the United States on March 21, 2026