


K&N Universal Clamp-On Air Filter 3in FLG / 5in B / 4-1/2in T / 5in H
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Universal Clamp-On Air Filter 3in FLG / 5in B / 4-1/2in T / 5in HSKU: RU 3870 UPC: 024844373663 K&N Universal Clamp On Air Filter 3in FLG 5in B 4 1 2in T 5in H K&N RU 3870 universal clamp on air filter delivers high airflow for racing vehicles radio controlled cars generators snowmobiles tractors ATVs and more. Flexible 3 inch centered flange stretches up to 1 16 inch with 5 inch base 4. 5 inch tapered top and 5 inch height fits any intake angle or offset. Pre oiled cotton gauze media traps dirt while increasing
Quick Dispatch:
Your K&N Universal Clamp-On Air Filter 3in FLG / 5in B / 4-1/2in T / 5in 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 3in FLG / 5in B / 4-1/2in T / 5in 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.
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4.5 ★★★★★
Based on 244 reviews
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Product Reviews
★★★★★ 5
Great product
Size: 2.5 Fl Oz (Pack of 1)
I love this stuff. Use it everyday. Great product. Smells great. Works perfectly. Non greasy a tube of it lasts about 7 months
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
★★★★★ 5
Good
Size: 2.5 Fl Oz (Pack of 1), Size: 2.5 Fl Oz (Pack of 1)
Perfect, both came wrapped and with a cap on. Bigger than I expected too!
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Reviewed in the United States on May 11, 2026
★★★★★ 4
Beware of non working pump.
Size: 2.5 Fl Oz (Pack of 1)
I just started using this tube and unfortunately the pump does not work. It does do it's job though, protects my face from the sun's rays. Not greasy feeling and smells nice.
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Reviewed in the United States on August 27, 2025
★★★★★ 5
Works great.
Size: 2.5 Fl Oz (Pack of 1)
Very light, non greasy sunscreen and has a lovely light scent. Goes on well under my moisturizers and make up.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Actually sheer, no white cast.
Size: 2.5 Fl Oz (Pack of 1)
Soo underrated! This is actually sheer, goes on very light and moisturizing. The price point is also fair. Any women of color unsure about this, get it!
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Reviewed in the United States on May 30, 2026