K&N Replacement Air Filter 33-2231

OVERVIEW
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 No-Hassle Lifetime 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!

PRODUCT DETAILS
ENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance
RUGGED CONSTRUCTION: K&N Air Filters are manufactured with durable, premium materials and state-of-the-art construction methods to last a lifetime
4 LAYERS OF PROTECTION: Multiple layers of premium cotton gauze treated with a specially-designed tacking agent work together to create an intricate mesh of engine filter media that is designed to block and trap harmful contaminants
CLEAN ONCE EVERY 5 YEARS: Engine air filter only needs cleaning every 75,000 miles under normal highway driving conditions (5 years based on the average miles driven per year of 15,000 miles)
REUSABLE K&N FILTER SAVES YOU MONEY: A K&N washable, reusable air filter will save you up to $125 vs. purchasing multiple disposable filters (compared to MSRP in USD of corresponding OE filters for 200,000 miles of highway driving)
ULTIMATE LONGEVITY: No-hassle lifetime limited warranty on stock replacement K&N air filters- limitations apply
EASY INSTALLATION: K&N Air Filters are pre-oiled and ready to drop into your factory air box- they are one of the easiest and most cost-effective vehicle upgrades for quick performance gains
REDUCES WASTE: Over 200 million disposable air filters and their packaging waste wind up in landfills each year- reusable filters help reduce waste in our landfills

VEHICLE APPLICATIONS
Supported Vehicles
2007 BMW 325Ci 2.5L L6 Gas

All Models

2007 BMW M3 3.2L L6 Gas

All Models

2006 BMW 325Ci 2.5L L6 Gas

All Models

2006 BMW 330Ci 3.0L L6 Gas

All Models

2006 BMW M3 3.2L L6 Gas

All Models

2006 BMW X3 3.0L L6 Gas

All Models

2005 BMW 320Ci 2.0L L6 Gas

E46

2005 BMW 320Ci 2.2L L6 Gas

All Models

2005 BMW 320i 2.2L L6 Gas

All Models

2005 BMW 325Ci 2.5L L6 Gas

All Models

2005 BMW 325i 2.5L L6 Gas

US Models Only

2005 BMW 325i 2.5L L6 Gas

192BHP

2005 BMW 325Ti 2.5L L6 Gas

All Models

2005 BMW 325Xi 2.5L L6 Gas

All Models

2005 BMW 330Ci 3.0L L6 Gas

US Models Only

2005 BMW 330i 3.0L L6 Gas

US Models Only

2005 BMW 330Xi 3.0L L6 Gas

US Models Only

2005 BMW M3 3.2L L6 Gas

All Models

2005 BMW X3 2.5L L6 Gas

US Models Only

2005 BMW X3 3.0L L6 Gas

All Models

2004 BMW 320Ci 2.0L L6 Gas

E46

2004 BMW 320Ci 2.2L L6 Gas

All Models

2004 BMW 320i 2.2L L6 Gas

All Models

2004 BMW 325Ci 2.5L L6 Gas

All Models

2004 BMW 325i 2.5L L6 Gas

All Models

2004 BMW 325Ti 2.5L L6 Gas

All Models

2004 BMW 325Xi 2.5L L6 Gas

All Models

2004 BMW 330Ci 3.0L L6 Gas

All Models

2004 BMW 330i 3.0L L6 Gas

All Models

2004 BMW 330Xi 3.0L L6 Gas

All Models

2004 BMW M3 3.2L L6 Gas

All Models

2004 BMW X3 2.5L L6 Gas

US Models Only

2004 BMW X3 3.0L L6 Gas

All Models

2003 BMW 320Ci 2.0L L6 Gas

E46

2003 BMW 320Ci 2.2L L6 Gas

All Models

2003 BMW 320i 2.2L L6 Gas

All Models

2003 BMW 325Ci 2.5L L6 Gas

All Models

2003 BMW 325i 2.5L L6 Gas

All Models

2003 BMW 325Ti 2.5L L6 Gas

All Models

2003 BMW 325Xi 2.5L L6 Gas

All Models

2003 BMW 330Ci 3.0L L6 Gas

All Models

2003 BMW 330i 3.0L L6 Gas

All Models

2003 BMW 330Xi 3.0L L6 Gas

All Models

2003 BMW M3 3.2L L6 Gas

All Models

2002 BMW 316Ci 1.6L L4 Gas

105BHP

2002 BMW 316i 1.6L L4 Gas

105BHP

2002 BMW 316i 1.9L L4 Gas

All Models

2002 BMW 320Ci 2.0L L6 Gas

E46

2002 BMW 320Ci 2.2L L6 Gas

All Models

2002 BMW 320i 2.2L L6 Gas

All Models

2002 BMW 325Ci 2.5L L6 Gas

All Models

2002 BMW 325i 2.5L L6 Gas

All Models

2002 BMW 325Ti 2.5L L6 Gas

All Models

2002 BMW 325Xi 2.5L L6 Gas

All Models

2002 BMW 330Ci 3.0L L6 Gas

All Models

2002 BMW 330i 3.0L L6 Gas

All Models

2002 BMW 330Xi 3.0L L6 Gas

All Models

2002 BMW M3 3.2L L6 Gas

All Models

2001 BMW 316Ci 1.6L L4 Gas

All Models

2001 BMW 316i 1.6L L4 Gas

All Models

2001 BMW 316i 1.9L L4 Gas

All Models

2001 BMW 318Ci 1.9L L4 Gas

All Models

2001 BMW 318i 1.9L L4 Gas

All Models

2001 BMW 320Ci 2.0L L6 Gas

E46

2001 BMW 320Ci 2.2L L6 Gas

All Models

2001 BMW 320i 2.2L L6 Gas

All Models

2001 BMW 325Ci 2.5L L6 Gas

All Models

2001 BMW 325i 2.5L L6 Gas

All Models

2001 BMW 325Ti 2.5L L6 Gas

All Models

2001 BMW 325Xi 2.5L L6 Gas

All Models

2001 BMW 330Ci 3.0L L6 Gas

All Models

2001 BMW 330i 3.0L L6 Gas

All Models

2001 BMW 330Xi 3.0L L6 Gas

All Models

2001 BMW M3 3.2L L6 Gas

All Models

2000 BMW 316Ci 1.6L L4 Gas

All Models

2000 BMW 316i 1.6L L4 Gas

E46

2000 BMW 316i 1.9L L4 Gas

E46

2000 BMW 318Ci 1.9L L4 Gas

All Models

2000 BMW 318i 1.9L L4 Gas

All Models

2000 BMW 320Ci 2.0L L6 Gas

E46

2000 BMW 320Ci 2.2L L6 Gas

All Models

2000 BMW 320i 2.0L L6 Gas

All Models

2000 BMW 320i 2.2L L6 Gas

All Models

2000 BMW 323Ci 2.5L L6 Gas

All Models

2000 BMW 323i 2.5L L6 Gas

All Models

2000 BMW 325Ci 2.5L L6 Gas

All Models

2000 BMW 325i 2.5L L6 Gas

All Models

2000 BMW 325Xi 2.5L L6 Gas

All Models

2000 BMW 328Ci 2.8L L6 Gas

All Models

2000 BMW 328i 2.8L L6 Gas

All Models

2000 BMW 330Ci 3.0L L6 Gas

All Models

2000 BMW 330i 3.0L L6 Gas

All Models

2000 BMW 330Xi 3.0L L6 Gas

All Models

2000 BMW M3 3.2L L6 Gas

All Models

1999 BMW 316i 1.9L L4 Gas

All Models

1999 BMW 318Ci 1.9L L4 Gas

All Models

1999 BMW 318i 1.9L L4 Gas

All Models

1999 BMW 318ti 1.9L L4 Gas

US Models Only

1999 BMW 320Ci 2.0L L6 Gas

E46

1999 BMW 320i 2.0L L6 Gas

E46

1999 BMW 323Ci 2.5L L6 Gas

E46

1999 BMW 323i 2.5L L6 Gas

E46

1999 BMW 328Ci 2.8L L6 Gas

All Models

1999 BMW 328i 2.8L L6 Gas

Non-US Models, E46

1998 BMW 316i 1.9L L4 Gas

All Models

1998 BMW 318i 1.9L L4 Gas

Non-US Models

1998 BMW 320i 2.0L L6 Gas

E46

1998 BMW 323i 2.5L L6 Gas

E46

1998 BMW 328i 2.8L L6 Gas

Non-US Models, E46

1997 BMW 318i 1.9L L4 Gas

Non-US Models

1996 BMW 318i 1.9L L4 Gas

Non-US Models

Products are shipped and delivered in 2 - 7 Business days.