K&N Engineering E-3952 High-Flow Replacement Air Filter

K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product! K&N's replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection, and are covered by K&N's No-Hassle Lifetime Limited Warranty. Associated products: 99-5000 Filter Care Service Kit Aerosol

• Will not void vehicle warranty
• Million Mile Limited Warranty

Upgrade your vehicle’s factory air intake system with the K&N Engineering E-3952 High-Flow Replacement Air Filter. This reusable automotive air filter uses a state-of-the-art layered, oiled cotton media design to improve airflow while helping capture engine-damaging contaminants. Its drop-in configuration is engineered for easy installation in the factory air box, making it a practical performance upgrade without extensive modifications.

The K&N E-3952 is designed to support increased horsepower and improved engine breathing while providing dependable filtration. Unlike disposable paper filters, this washable and reusable filter is engineered to last for the lifespan of your vehicle when properly maintained. It is backed by K&N’s 10-Year/Million Mile Limited Warranty and will not void the vehicle manufacturer’s warranty when properly installed and maintained.

Key Features and Performance Benefits

• High-flow layered, oiled cotton media promotes improved airflow and supports engine performance.
• Washable and reusable construction reduces the need for repeated disposable filter replacements.
• Drop-in replacement design installs into the factory air box for straightforward fitment.
• Backed by K&N’s 10-Year/Million Mile Limited Warranty for long-term coverage.

Product Specifications and Technical Data

• Brand: K&N Engineering
• Part Number: E-3952
• Product Type: High-flow replacement air filter
• Filter Style: Custom rectangular replacement filter
• Filter Media: Layered, oiled cotton
• Serviceability: Washable and reusable
• Installation Location: Factory air box
• Warranty: 10-Year/Million Mile Limited Warranty

What’s Included

One K&N Engineering E-3952 High-Flow Replacement Air Filter. For cleaning and re-oiling, K&N recommends the 99-5000 Filter Care Service Kit Aerosol, sold separately.

Vehicle-specific fitment should be confirmed before purchase using the application details for your vehicle. This filter is intended as an automotive replacement component and is not identified as CARB approved; verify local emissions requirements where applicable.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1