Audi A5 Quattro 3.2L 2009, E Series Unique Red Air Filter by K&N®. K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. K&N makes over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. K&N stock replacement air filters for street vehicles are covered by K&N famous K&N Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need.
|Filter Types: Direct Fit Filter|
|Series: E Series|
|Filter Shape: Unique|
|Filter Style: Flanged|
|Flange Type: Single Flange|
|Filter Color: Red|
|Filter Top Type: Closed Top|
|Filter Top Material: Rubber|
|Filter Flange Type: Centered|
|Filter Flange Angle: Straight|
|Filter Flange Inside Diameter: 3.625"|
|Filter Flange Length: 0.625"|
|Filter Top Outside Diameter: 5.063"|
|Filter Base Outside Diameter: 6"|
|Filter Height: 6.063"|
|Air Filter Material: Cotton Gauze|
|Filter Re-Oiling Amount: 2.12oz|
- Designed to boost horsepower and rate of acceleration
- Can be cleaned and used again
- High air flow with exceptional filtration
- Lasts up to 50,000 miles before cleaning is required depending on driving conditions
- Works with original equipment manufacturer vehicle electronics
- Emissions legal in all 50 US states
- Will NOT void vehicle warranty
- Million Mile Limited Warranty
- 1 Air Filter
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.
WARNING Cancer and Reproductive Harm. www.p65warnings.ca.gov