K&N Round Tapered Universal Air Filter 3.5in Flange ID / 5.75in Base OD / 3.75in Top OD / 6in H

K&N Round Tapered Universal Air Filter 3.5in Flange ID / 5.75in Base OD / 3.75in Top OD / 6in H

Marsoni

M251S

$75.99

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

K&N Round Tapered Universal Air Filter 3.5in Flange ID / 5.75in Base OD / 3.75in Top OD / 6in HSKU: RF 1031 UPC: 024844044440 K&N Round Tapered Universal Air Filter 3. 5in Flange ID 5. 75in Base OD 3. 75in Top OD 6in H RF 1031 K&N RF 1031 is a round tapered universal clamp on air filter designed for racing vehicles radio controlled cars generators snowmobiles tractors and custom intakes. Flexible rubber flange stretches up to 1 16 inch for secure fit on 3. 5 inch inside diameter tubes. Pre oiled cotton gauze media delivers high airflow for

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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These filters (my second one) has lasted me over two years with a little maintenance in between, (removing from time to time to vacuum and shake out the bigger debris.) They do a great job of keeping the cabin air really clean and fresh. 1) Over designed and built (Good thing) installed without effort. 2) Fit and finish is perfect for my 2016 Genesis G80 3) Carbon filter works well but after about six months it no longer absorbs orders, This is excepted especially when I have not swapped it out for over two years. 4) Great value and honestly I should be replacing these cabin filters out ever six months for efficiency and order control. Note: When I decided to replace it the filter held up structurally as the day I installed it. The charcoal beads where all intact as well.

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Reviewed in the United States on January 30, 2026

Verified Purchase

RadcoCorp.

Charlottesville, US

★★★★★ 5

Better than OEM, AC is so fresh now!

Style: CF10374 Classic, Style: CF10374 Classic

YEEEEEEAHHHHH! This went straight from the mailman's hand to my 2010 Tacoma. -Fits better than OEM and Replacements! -AC smells so fresh now! -Easy installation without any complications. -Has a foam gasket around the filter that makes it fit like a glove, thight and secure! -Very Well Made and quality materials. Won't be returning this one, will actually buy it for the rest of my cars! ⭐️⭐️⭐️⭐️⭐️

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Reviewed in the United States on May 11, 2026

Verified Purchase

rose

Birmingham, US

★★★★★ 5

Exactly as pictured

I ordered this air filter for my car, it is exactly as described and pictured. The fit was perfect and the quality is worth the price.

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Reviewed in the United States on December 10, 2024

Verified Purchase

Chris Banner