


K&N Universal Clamp-On Air Filter 2-3/4in FLG / 4-11/16in B / 3-1/2in T / 4-7/8in H
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Universal Clamp-On Air Filter 2-3/4in FLG / 4-11/16in B / 3-1/2in T / 4-7/8in HK&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra strong molded pliable rubber flanges which absorb vibration and allow for secure
Quick Dispatch:
Your K&N Universal Clamp-On Air Filter 2-3/4in FLG / 4-11/16in B / 3-1/2in T / 4-7/8in H orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your K&N Universal Clamp-On Air Filter 2-3/4in FLG / 4-11/16in B / 3-1/2in T / 4-7/8in H ships.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.8 ★★★★★
Based on 1787 reviews
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Product Reviews
★★★★★ 5
Great price nice and soft material
Color: Dark Grey, Size: 1 Pack Body(20x54)-Regular
Says it's a cooling pillow case and it fits my pillow perfect and yes it's cooling
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Very cool pillow cover
Color: Dark Grey, Size: 1 Pack Body(20x54)-Regular
Great value for the price! Body pillow is very comfortable and silky smooth. Has a very nice very color. Pillow case is not heavy at all! Would recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
★★★★★ 5
Good pillow case
Color: Dark Grey, Size: 1 Pack Body(20x54)-Regular
It’s a nice soft pillow case. Fits perfectly on my body pillow
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 4
Cooling and comfortable against your skin
Color: Navy Blue, Size: 1 Pack Body(20x54)-Regular
Fits perfectly and feels nice against your skin. Just wish it had a zipper on the end. That would have made it perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
★★★★★ 5
I am stunned
Color: Black, Size: Queen(20x30)
I had no idea what to expect from these. But for as cheap as they were I was willing to just write it off of they weren't that good.
I had already picked up a new memory foam pillow to replace my previous memory foam pillow that didn't do well with dissipating heat. This new pillow was fine by itself, but when I put my pillowcase on it, the properties that made it cooling were negated. I'd get a bit of sweat on the side of my head or my neck where it was against the pillow all night. The pillow was supposed to be a cool one, but the pillowcase was not.
So I grabbed this set. Smooth, no loose threads anywhere, stitching and seams are all spot on. And it's smooth to the touch. Got it on the pillow, and as soon as I laid my head down on it, I could tell immediately that this was going to be a different result that my other one. Not nearly as warm even after laying on it for a while. No heat buildup, no bits of moisture on the skin after being on it all night.
This definitely works well, especially with my cool sleep pillow. Now I can have a far more comfortable nights sleep. For the price, it's a steal. I have no idea what longevity will be, but with two of them, I'm sure I'll get more than my money's worth.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 7, 2023
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