★★★★★ 5
Great fitment, made changing the oil filter easy
Perfect fit for my m760i oil filter housing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
K&N Custom Air Filter 14in OD / 12in ID / 6in Height
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Custom Air Filter 14in OD / 12in ID / 6in HeightSKU: E 3770 UPC: 024844004499 K&N Custom Air Filter 14in OD 12in ID 6in Height E 3770 K&N E 3770 round air filter measures 14 inches outside diameter 12 inches inside diameter and 6 inches height for custom air box applications. Layered oiled cotton media improves airflow captures contaminants and adds horsepower in performance setups. Washable and reusable design backed by No Hassle Lifetime Limited Warranty lasts vehicle life with cleaning every
Quick Dispatch:
Your K&N Custom Air Filter 14in OD / 12in ID / 6in 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
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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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4.1 ★★★★★
Based on 1535 reviews
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Product Reviews
★★★★★ 5
s tier quality
superior quality, single cast aluminum 👍
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
★★★★★ 4
Too Tight but It Works
It doesn't really sit on very well to be honest, it tends to sit TOO tight in my opinion. Taking it off can be a hassle but at least it gets the job done, durability is good, finish is great, obviously easy to use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2025
★★★★★ 5
BMW F25
Saved me when tried to change the oil. Great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 5
Perfect fit
This product was a perfect fit on our 2009 BMW 328i. It was alittle difficult connecting the hose at the bottom because my husband has big hands but I was able to help tighten the screw Due to my smaller hand size Overall very good product and fast delivery
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 5, 2023
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