K&N® 33-2181 - 33 Series Air Filter

K&N Performance Air Intake Systems
K&N® - 33 Series Air FilterK&N® - 33 Series Air FilterK&N® - 33 Series Air Filter Installation InstructionsK&N® - 33 Series Air Filter Airflow TestK&N® - Cleaning GuideK&N® - Air Filter Overview 602x420K&N Authorized Dealer
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Product Details

33 Series Air Filter (33-2181) by K&N®. Get better performance, superior engine protection and more economical operation just by changing your air filter. The K&N air filter gives you increased airflow without sacrificing filtration ability. It's the last air filter you'll ever buy for your car.

K&N - F.A.Q. K&N - Air Filter Cleaning K&N - Warranty

Features:

  • Improves engine airflow
  • Increases horsepower and acceleration
  • Superior filtration without reduced airflow
  • Reduces maintenance costs
  • Washable and reusable
  • Get up to 50,000 miles between cleanings under normal driving conditions
  • Emissions legal in all States
  • Backed by K&N's Million Mile Limited Warranty

Most air filters on the market are a compromise. Many high-performance filters deliver better airflow, but sacrifice filtering ability and engine protection in the process. OEM filters, which are usually made of paper, filter adequately but at the expense of airflow. And airflow decreases as these air filters become dirty. Not so the K&N air filter. K&N air filters increase airflow without decreasing filtration ability, and the increased airflow remains consistent throughout the filter's service interval. The secret is in the K&N filter's construction.

K&N's initial goal was to develop a filter that would deliver increased airflow during dirty, dusty off-road racing conditions. Increased airflow improves the efficiency of the combustion process, increasing horsepower and torque. But just increasing airflow without ensuring adequate filtration under those conditions would result in a ruined engine. K&N's solution was a filter design consisting of 4 to 6 layers of cotton gauze sandwiched between two aluminum wire screens. The cotton is then treated with a specially formulated grade of oil that causes tackiness throughout the cotton’s microscopic strands. The resulting K&N filter not only delivers increased airflow while trapping dirt particles that could harm your engine, that level of airflow is maintained even as the filter gets dirty. The layers of oiled cotton fibers in the K&N filter trap dirt particles that are smaller than the holes in the filter media. The thickness of the layers also allows the K&N filter to trap dirt and dust on many levels, trapping more dirt without decreasing airflow. Contrast this with a paper filter that only traps dirt on its surface; as the surface area becomes clogged, the airflow rate goes down.

Each K&N air filter is custom designed to fit into your existing factory air box. The K&N filter is economical because it's the last air filter you'll have to buy for your car. It can be washed and reused many times, and since you can usually drive up to 50,000 miles between servicing, you won't have to clean it very often. And every K&N filter is backed by K&N's Million Mile Limited Warranty. By the way, check the CARiD reviews and read what the customers think of K&N porducts.

46.99
Brand: K&N       Part Number: 33-2181       UPC: 024844086020
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K&N® is the inventor and leading innovator of reusable cotton gauze filter technology for automotive applications. The first K&N filter was conceived for racing over 40 years ago and a performance enthusiast mindset continues today throughout all levels of the company. K&N is the sales and brand leader for performance filters, including an extensive line of factory replacement filters and performance air intake kits. The company actively promotes the environmental, economical and performance advantages of long-life reusable cotton gauze filters.

Product Reviews (1)

Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

K&N® 33-2181 - 33 Series Air Filter
K&N® - 33 Series Air Filter
Average Rating:  4.5  4.5 of 5
APPEARANCE
EASE OF INSTALLATION
PRICE/VALUE
QUALITY
(4.5)
APPEARANCE
EASE OF INSTALLATION
PRICE/VALUE
QUALITY
Great Filter for Any Engine
2010 Mercedes M Class | Posted by | (Jacksonville, FL)

I purchase these filters on all of my vehicles (past and current). I had lots of gas savings on my Toyota Highlander 2005, about 60 miles per tank more with K&N, but with 2008 model I didn't have any difference. But the ease of going up to speed was better with K&N in it. On the current Mercedes ML350 I felt a good change in acceleration as well, haven't tested MPG yet.

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Vehicle FitmentThis part is compatible with 120 vehicle(s)
Year Make Model Fitment Notes
2014 Mercedes G Class    G500 / G550
2013 Mercedes G Class    G550
2013 Mercedes S Class    S400
2013 Mercedes-Benz G500
2012 Mercedes C Class    C300
2012 Mercedes G Class
2012 Mercedes GL Class    GL450 / GL550
2012 Mercedes GLK class
2012 Mercedes S Class    S400
2012 Mercedes SL Class    SL550
2012 Mercedes-Benz GL500
2011 Mercedes C Class    3.0L; C350
2011 Mercedes CL Class    CL500 V8
2011 Mercedes CLS Class    CLS550
2011 Mercedes E class    E550; E350 3.5L
2011 Mercedes G Class    G500 / G550
2011 Mercedes GL Class    GL450 / GL550
2011 Mercedes GLK class
2011 Mercedes M Class    ML550; ML350 3.5L
2011 Mercedes R Class    3.5L
2011 Mercedes S Class    S400; S500 V8
2011 Mercedes SL Class    SL500 / SL550 V8
2011 Mercedes SLK Class    SLK300 / SLK350
2011 Mercedes-Benz GL500
2011 Mercedes-Benz GLK300
2010 Mercedes C Class    3.0L; C350
2010 Mercedes CL Class    CL500 / CL550 V8
2010 Mercedes CLS Class    CLS550
2010 Mercedes E class    E350 / E550
2010 Mercedes G Class    G500 / G55 AMG 5.5L
2010 Mercedes GL Class    GL450 / GL550
2010 Mercedes GLK class
2010 Mercedes M Class    ML550; ML350 3.5L
2010 Mercedes R Class    3.5L
2010 Mercedes S Class    S400; S500 / S550 V8
2010 Mercedes SL Class    SL500 V8
2010 Mercedes SLK Class    5.5L; SLK300 / SLK350
2010 Mercedes-Benz GL500
2010 Mercedes-Benz GLK300
2009 Mercedes C Class    C300 / C350
2009 Mercedes CL Class    CL550
2009 Mercedes CLK Class    CLK350 / CLK550
2009 Mercedes CLS Class    CLS550
2009 Mercedes E class    E350 / E550
2009 Mercedes G Class    G55 AMG 5.5L
2009 Mercedes GL Class    4.6L / 5.5L
2009 Mercedes M Class    ML350 / ML550
2009 Mercedes R Class    R350
2009 Mercedes S Class    S550
2009 Mercedes SL Class    SL550
2009 Mercedes SLK Class    3.0L / 3.5L / 5.5L
2008 Mercedes C Class    C230 / C300 / C350
2008 Mercedes CL Class    CL550
2008 Mercedes CLK Class    CLK350 / CLK550
2008 Mercedes E class    E350 / E550
2008 Mercedes G Class    5.5L; G500
2008 Mercedes GL Class    4.6L / 5.5L
2008 Mercedes M Class    ML350 / ML550
2008 Mercedes R Class    R350
2008 Mercedes S Class    S550
2008 Mercedes SL Class    SL55 AMG / SL550 V8
2008 Mercedes SLK Class    3.0L / 3.5L / 5.5L
2007 Mercedes C Class    C230 / C280 / C350
2007 Mercedes CL Class    CL550
2007 Mercedes CLK Class    CLK350
2007 Mercedes CLS Class    CLS550
2007 Mercedes E class    E350 / E550
2007 Mercedes G Class
2007 Mercedes GL Class    4.6L
2007 Mercedes M Class    ML350 / ML500
2007 Mercedes R Class    R350 / R500
2007 Mercedes S Class    S550
2007 Mercedes SL Class    SL55 AMG / SL550 5.5L
2007 Mercedes SLK Class    3.0L / 3.5L / 5.5L
2006 Mercedes C Class    2.5L / 3.0L / 3.5L / 5.5L
2006 Mercedes CL Class    CL500 / CL55 AMG
2006 Mercedes CLK Class
2006 Mercedes CLS Class    5.0L / 5.5L
2006 Mercedes E class    3.5L / 5.0L / 5.5L
2006 Mercedes G Class
2006 Mercedes M Class
2006 Mercedes R Class
2006 Mercedes S Class    S350 / S430 / S500
2006 Mercedes SL Class    SL500; SL55 AMG 5.5L
2006 Mercedes SLK Class    3.0L / 3.5L / 5.5L
2005 Mercedes C Class    2.6L / 3.2L / 5.5L
2005 Mercedes CL Class    CL500 / CL55 AMG
2005 Mercedes CLK Class
2005 Mercedes E class    V6; 5.0L / 5.5L
2005 Mercedes G Class
2005 Mercedes S Class    S430 / S500
2005 Mercedes SL Class    SL500; SL55 AMG 5.5L
2005 Mercedes SLK Class    3.5L / 5.5L
2004 Mercedes C Class    C240 / C320
2004 Mercedes CL Class    CL500; CL55 AMG 5.5L
2004 Mercedes CLK Class    3.2L / 5.0L / 5.5L
2004 Mercedes E class    3.2L / 5.0L / 5.5L
2004 Mercedes G Class    G500
2004 Mercedes S Class    S430 / S500; S55 AMG 5.5L
2004 Mercedes SL Class    SL500; SL55 AMG 5.5L
2003 Mercedes C Class    C240 / C320
2003 Mercedes CL Class    CL500
2003 Mercedes CLK Class    3.2L / 5.0L / 5.5L
2003 Mercedes E class    3.2L / 5.0L / 5.5L
2003 Mercedes G Class    G500
2003 Mercedes S Class    S430 / S500 / S55 AMG
2003 Mercedes SL Class    SL500; SL55 AMG 5.5L
2002 Mercedes C Class    C240 / C320
2002 Mercedes CL Class    CL500
2002 Mercedes S Class    S430 / S500
2002 Mercedes SL Class    SL500
2001 Mercedes C Class    C240 / C320
2001 Mercedes CL Class    CL500
2001 Mercedes S Class    S430 / S500
2001 Mercedes SL Class    SL500
2000 Mercedes CL Class
2000 Mercedes S Class    S430 / S500
2000 Mercedes SL Class    SL500
1999 Mercedes CL Class    CL500
1999 Mercedes SL Class    SL500
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