K&N Filter Universal Rubber Filter 3.75in Flange ID / 5.375in Base OD / 4.375in Top OD / 5in Height

K&N Filter Universal Rubber Filter 3.75in Flange ID / 5.375in Base OD / 4.375in Top OD / 5in Height

Marsoni

M251S

$88.07

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

K&N Filter Universal Rubber Filter 3.75in Flange ID / 5.375in Base OD / 4.375in Top OD / 5in HeightK&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

Easy Shipping

Quick Dispatch:

Your K&N Filter Universal Rubber Filter 3.75in Flange ID / 5.375in Base OD / 4.375in Top OD / 5in Height 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 Filter Universal Rubber Filter 3.75in Flange ID / 5.375in Base OD / 4.375in Top OD / 5in Height ships.

Need Help?
Questions about K&N Filter Universal Rubber Filter 3.75in Flange ID / 5.375in Base OD / 4.375in Top OD / 5in Height, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for K&N Filter Universal Rubber Filter 3.75in Flange ID / 5.375in Base OD / 4.375in Top OD / 5in Height in your area.

Get Shipping Estimates

Country Zip/Postal Code

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

Reclaimed real desk space with this one. The mount holds the laptop securely underneath without any vibration or creaking and the installation required no drilling — clamped cleanly to the desk edge. The ventilation spacing is generous enough that thermals stay reasonable even under load. Works with a solid range of laptop sizes and the adjustment mechanism is easy to use. If your laptop spends most of its time docked this is the cleanest way to get it out of the way.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 25, 2026

Verified Purchase

Echo November

Birmingham, US

★★★★★ 4

Works great, but pads are peeling.

Color: Black, Size: 1.37" without hook

Works for what I needed, which was to mount my work laptop to the side of my desk. However, the rubber pads started peeling the first day. I tried clamping them down overnight, but they still ended up peeling up. They haven't come off completely and are still working, though. I may have to glue them down.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 14, 2026

Verified Purchase

Massapequa, US

★★★★★ 5

Quality product.

Color: White, Size: 1.37" without hook

First of all it's made of metal so, I won't worry about accidentally breaking it and dropping my laptop. It came with adhesive rubber pads that fit inside the brackets, which is a nice touch for helping not to scratch up the laptop. It makes a huge difference to help declutter the desktop space.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 18, 2026

Verified Purchase

Boji Girl

Battle Creek, US

★★★★★ 5

Satisfied my need.

Color: Black, Size: 1.37" without hook

Easy to install and my laptop fits solidly. I have a work laptop, tower and my personal laptop. I hated how busy my home office desk looked. Moved my personal laptop underneath and made a big difference.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 28, 2026

Verified Purchase

Donovan

Dallas, US

★★★★★ 5

Perfect for under table/desk mounting

Color: Black, Size: 1.37" without hook

Just what I neeed! These work flawlessly to hide your laptop from taking up desk top space. These do just that! They come with the screws needed to mount them, and the little sticky pade to prevent scratches on your laptop. Perfect Product! A+++

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 8, 2026