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K&N E-3740 High-Performance 14
K&N E-3740 High-Performance 14
K&N E-3740 High-Performance 14
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K&N E-3740 High-Performance 14"x3" Round Washable Air Filter

Marsoni M251S
Sale price$164.99
Pay 4 payments of $41.25 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
K&N E-3740 High-Performance 14"x3" Round Washable Air Filteroverview The K&N E 3740 High Performance Replacement Air Filter is engineered to enhance your vehicle's engine efficiency, providing a significant boost in horsepower and improved acceleration. Constructed from premium cotton gauze, this durable, washable, and reusable air filter ensures superior filtration, safeguarding your engine from harmful contaminants. features High Performance Filtration: Utilizes multiple layers of oiled cotton gauze,
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Your K&N E-3740 High-Performance 14"x3" Round Washable Air Filter orders ship within 1-2 business days.

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  • 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
4.6 ★★★★★
Based on 671 reviews
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Verified Purchase
Shane605
Massapequa, US
★★★★★ 5
DIY
Good price and fit my 2018 subaru crosstrek. Saved money switching it out myself. Super easy to do it yourself
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
A
Verified Purchase
Amazon Customer
Phoenix, US
★★★★★ 5
Perfect fit
Perfect fit on my 2019 Subaru Forester.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
S
Verified Purchase
sue garland
Houston, US
★★★★★ 5
Easy install
Perfect fit
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Reviewed in the United States on March 24, 2026
C
Verified Purchase
Chris
Pawtucket, US
★★★★★ 5
EPAuto stuff works and fits
Love their auto filters, tools and tire air compressers. EPAuto stuff works great and always fit!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
A
Verified Purchase
Amazon Customer
Houston, US
★★★★★ 5
Great price, easy install
OEM fit and very easy to install. No issues at all — everything worked exactly as expected.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 19, 2025

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