K&N® 33-2059 - 33 Series Panel Air Filter

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K&N® - 33 Series Air FilterK&N® - 33 Series Air FilterK&N® - 33 Series Air Filter Installation InstructionsK&N® - Cleaning GuideK&N® - Air Filter Overview 602x420K&N Authorized DealerK&N Special OffersK&N Special OffersK&N Special Offers
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K&N Air Filters

33 Series Panel Air Filter (33-2059) by K&N®. A K&N 33 series OE replacement air filter is designed to increase horsepower and acceleration. These washable and reusable panel air filters are easy to install because they fit directly into the existing vehicle factory air box.

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  • 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.

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.

Part Number:

Vehicle Fitment

This part is compatible with 31 vehicle(s)
Year Make Model Fitment Notes:
1999 BMW 8-Series
1998 BMW 8-Series
1997 BMW 850Ci
1996 BMW 850Ci
1995 BMW 850CSi / 850Ci
1994 BMW 318i / 318is
1994 BMW 750iL
1994 BMW 850CSi / 850Ci
1993 BMW 318i / 318is
1993 BMW 750iL
1993 BMW 8-Series
1992 BMW 318i / 318is
1992 BMW 750iL
1992 BMW 8-Series
1991 BMW 318i / 318is / 325i / 325iX
1991 BMW 525i
1991 BMW 750iL
1991 BMW 8-Series
1990 BMW 325i / 325iX / 325is
1990 BMW 525i
1990 BMW 750iL
1989 BMW 325i / 325iX / 325is
1989 BMW 525i
1989 BMW 750iL
1988 BMW 325i / 325iX / 325 / 325is
1988 BMW 528e
1988 BMW 750iL
1987 BMW 325e / 325i / 325is
1987 BMW 528e
1986 BMW 325e
1986 BMW 528e
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K&N® - 33 Series Air FilterK&N® 33-2059 - 33 Series Panel Air Filter    $42.99
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