★★★★★ 5
Very cold
Color: 01 - Light Grey
Super cold
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 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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4.9 ★★★★★
Based on 52 reviews
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Product Reviews
★★★★★ 5
Cool pillow vase
Color: 01 - Light Grey
Nice cool material and stays kn the pillow well due to the snaps.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
★★★★★ 3
Ugly
Color: 01 - Light Grey
The light blue color looks like a hospital gown. Keeps cool but I don't think I can bear looking at it.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Cooling pillowcase
Color: 01 - Light Grey
These cooling pillowcases are fabulous. I just have one complaint they snap at the end instead of having a zipper, which could be uncomfortable if you’re laying on that snap. Also, it’s very hard to unfasten.
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Reviewed in the United States on December 5, 2025
★★★★★ 5
Comfy and cooling pillow cases for sleeping
Color: 01 - Light Grey, Color: 01 - Light Grey
Cooling cover for my pillow, great quality and super soft. Helps with my sleep. Have eye mask as a gift too. Highly recommended.
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Reviewed in the United States on December 28, 2025
