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K&N BMW Drop In Air Filter
K&N BMW Drop In Air Filter
K&N BMW Drop In Air Filter
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K&N BMW Drop In Air Filter

Marsoni M251S
Sale price$68.99
Pay 4 payments of $17.25 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
K&N BMW Drop In Air FilterSKU: 33 2231 UPC: 024844092304 K&N 33 2231 Replacement Air Filter for 1999 2006 BMW 3 Series M3 X3 K&N 33 2231 is a washable reusable high flow drop in air filter designed for select BMW models from 1999 to 2006. It features layered oiled cotton media that improves airflow for more horsepower and acceleration while trapping contaminants. This direct factory replacement installs in minutes and lasts the life of your vehicle. Key Features 4 Layers of
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  • Fast: 2-3 business days
  • Express: 1-2 business days

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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
4.0 ★★★★★
Based on 930 reviews
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Product Reviews
D
Verified Purchase
Daniel Johnson
Carnegie, US
★★★★★ 5
Nice
I love it. It's a nice slim wallet. Nothing special, but looks really nice, works well. I've been using it for a month with no problems. It's nicely lined, seemingly well made, etc. I got a good price on it, so I'm happy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 20, 2013
W
Verified Purchase
Whitney
Houston, US
★★★★★ 2
Cards don’t fit tight
Color: Black Embossed
My credit cards fall out. Needed a more secure alternative— still stayed with Tumi though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 17, 2025
F
Verified Purchase
Fleetside Garage
Omaha, US
★★★★★ 3
Wonderfully made, but not well sized for US currency
This is a very nice slim billfold, but unfortunately, it's not well sized for US currency. Probably for Euros. US Dollars fit, but it's a touch too narrow across to easily insert a bill. So you'll have to very diligently straighten and align a greenback to make it fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 24, 2013
C
Verified Purchase
Carlos G
Phoenix, US
★★★★★ 5
Great Quality
Size: 11.5, Color: Black/Ivory
EXCELLENT! Very comfortable and great looking shoes!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
N
Verified Purchase
Noah Hoskins
New York, US
★★★★★ 5
Office Wear
Size: 10.5, Color: Optic White/Optic White
Great shoes for a casual day at the office. I have to size a half size down for Cole Haan usually. Comfortable and looks great with any fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026

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