K&N 33-2857 Engine Air Filter

High-Flow Replacement Air Filter

K&N 33-2857 is a washable, reusable engine air filter built with layered oiled cotton gauze media for improved airflow and contaminant capture. It installs in the factory air box and is backed by a 10-Year/Million Mile Limited Warranty.

Key Features

• Panel-style high performance air filter with flexible frame
• Oiled cotton gauze media for airflow and filtration balance
• Pre-oiled and washable for repeated service intervals
• Drop-in replacement for factory air box installation
• Covered by K&N 33-2857 warranty protection

Detailed Description

This K&N replacement air filter is engineered as a direct drop-in upgrade for the factory air box, using a panel design and layered cotton gauze media to support airflow while trapping airborne contaminants. The pre-oiled construction simplifies service, and the reusable design is intended to last through the life of the vehicle. It is a practical choice for owners looking for a performance-oriented engine air filter for Porsche Cayenne, Volkswagen Touareg, and Audi Q7 applications. The part number 33-2857 is also referenced by multiple cross-application numbers, including Wix 49920 and Baldwin PA4111, for the same application.

What It Helps Address

• Restricted airflow from a dirty factory air filter
• Routine replacement needs for a washable filter element
• Dust and debris entering the intake stream
• Service intervals that call for a reusable filter solution
• Factory air box replacement requirements for compatible vehicles

Installation Notes and Quality Assurance

Install this filter in the factory air box following the vehicle service procedure. Verify the air box is clean before installation and confirm the filter seats properly around the perimeter. Re-oiling is required after cleaning; the listed re-oiling amount is 1.74 oz (51 ml). K&N backs part number 33-2857 with a 10-Year/Million Mile Limited Warranty.