K&N Engineering

K&N Custom Air Filter - Rectangular - 6.75in O/S Length x 4.5in O/S Width x 2.5in Height - E-3952

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SKU:
KNNE-3952
UPC:
024844004659
MPN:
E-3952
Availability:
Regularly stocked product
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$68.99
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Description

How often do I need to replace my K&N drop-in air filter?
K&N drop-in air filters are washable and reusable, offering sustained peak performance for many years with proper cleaning and maintenance.

Will a K&N drop-in air filter improve my vehicle's horsepower?
Designed to improve airflow and capture contaminants, K&N drop-in air filters provide a noticeable boost in acceleration and responsiveness.

K&N Drop-in Air Filters are engineered for an effortless upgrade, delivering a 9/10 engine performance score and designed to provide an increase in horsepower. Featuring a layered, oiled cotton media, these high-flow filters enhance engine protection by trapping more contaminants. Experience sustained peak performance with a filter built for confidence and longevity.

Key Features

  • washable reusable High-Flow Air Filters
  • layered oiled cotton media
  • designed to improve airflow and capture contaminants
  • designed to provide an increase in horsepower
  • reusable engineered to last for the entire lifespan of your vehicle
  • 10-Year/Million Mile Limited Warranty

Why Choose the KN Drop in Air Filters

Delivers sustained peak performance with a filter you can clean and reuse.

Achieves superior engine protection by trapping more dirt and debris.

Provides a noticeable boost in acceleration and responsiveness.

Transforms your engine's breathing for a more exhilarating drive.

Who Is This For?

Street Performance — 8/10
Designed to improve airflow and horsepower.

Track / Autocross — 7/10
Improves airflow for potential performance gains.

Drag Racing — 7/10
Designed to provide an increase in horsepower.

Engine Performance — 9/10
High-flow media designed to improve airflow.

Easy DIY Install — 10/10
Drop-in install type simplifies replacement.

Racing Competition — 7/10
Designed to improve airflow and horsepower.

Frequently Asked Questions

What is a K&N drop-in air filter and how does it work?

A K&N drop-in air filter is a direct replacement for your vehicle's stock air filter. It features a layered, oiled cotton media designed to improve airflow and capture contaminants, achieving a "Engine Performance" score of 9.

How easy is it to install a K&N drop-in air filter?

Installing a K&N drop-in air filter is a simple "Easy DIY Install" process, rated 10 out of 10 for ease of installation. This drop-in installation type means it fits directly into your existing airbox without modifications.

Will a K&N drop-in air filter increase my vehicle's horsepower?

A K&N drop-in air filter is designed to provide an increase in horsepower, contributing to a "Street Performance" score of 8. Its high-flow design enhances engine breathing for a more exhilarating drive.

How do I clean and maintain my K&N drop-in air filter?

Cleaning your K&N drop-in air filter involves using a K&N cleaning kit to restore its performance. This maintenance level is rated as "Easy," and the filter is reusable, engineered to last for the entire lifespan of your vehicle.

Additional Resources

Official K&N Engineering Product Page

Important Notices

⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

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Additional Information

Clearance Item:
N
MPN:
E-3952
Proposition 65:
Y
Case Lot Quantity:
1
Category:
Air Filters>Air Filters - Drop In
Universal Fitment:
Y
Install Type:
Drop-In
Product Level:
Premium Performance
Street Performance:
8/10
Track / Autocross:
7/10
Drag Racing:
7/10
Engine Performance:
9/10
Easy DIY Install:
10/10
Racing Competition:
7/10
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