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K&N E-1987 Air Filter

Universal Air Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.6 out of 5 stars   17 Customer Reviews
  • 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®
The K&N E-1987 Air Filter fits some Audi A3, Audi A4, Audi A4 Quattro, Audi A5, Audi A5 Quattro, Audi Q5, Audi S4, Audi S5, and Audi SQ5 models. See vehicle applications link for details.
K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make 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. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need.

[More Information on K&N Replacement Air Filters]

Product Specifications

Air Filter ShapeRound Tapered
Filter MaterialCotton Gauze
Flange Length0.625 in (16 mm)
Height6.063 in (154 mm)
Package Contents1 Air Filter
Package Quantity1
Product StyleUnique Universal Air Filter
Flange Inside Diameter3.625 in (92 mm)
Flange TypeCentered
Base Outside Diameter6 in (152 mm)
Top Outside Diameter5.063 in (129 mm)
Top StyleRubber
Top MaterialNone
Weight1.7 lb (0.8 kg)
Filter Re-Oiling Amount2.12 oz (63 ml)
Product Box Height7.25 in (184 mm)
Product Box Length6.5 in (165 mm)
Product Box Width6.5 in (165 mm)

K&N E-1987 Air Filter Product Reviews

Monday, January 8, 2018 - Part E-1987
Brilliant filter, has really improved performance, not massively, but there’s less lag, and slightly more power. More speed out of the revs. Has a healthy grunt too. The only thing I would say is I used to fill up around £50-60 a week, I’m now filling up around £60-70 a week, so the car is now a little thirstier, but that’s expected from a 3 litre V6. Thank you K&N. Love the air filter and the gains.

Umar Rashid
Bradford England
Monday, October 9, 2017 - Part E-1987
Fast delivery and easy to install. Certainly makes a difference.

Daryl Glindemann
Brisbane, Australia
Tuesday, August 22, 2017 - Part E-1987
Excellent device and product. I would recommend them to anyone.

Jerry Barrett
Bedford, United Kingdom
Tuesday, May 2, 2017 - Part E-1987
The installation was fairly easy, and the instructions were helpful. I still have to observe if fuel efficiency improved as time goes by. I noticed improved pick up during acceleration which was very pleasing. My only complain is that the threads on the filter bolts stripped very easy. I believe I may have stripped the threads on one of them when I tightened it, and I wasn't even applying too much pressure. I just hope it doesn't loosen to the point of disconnection.

Celerino Lopez
New Milford, New Jersey
Friday, April 14, 2017 - Part E-1987
Fits like a glove, instructions were almost perfect. I believe I have a slight gain in acceleration and gas mileage. All my cars have always been equipped with K&N filters.

Mark Lovretin
Morris Plains, New Jersey
Friday, December 9, 2016 - Part E-1987
Awesome filter in my S5 with Stage 1+ 2, with supercharger pulley upgrade, made a big difference in air flow to the supercharger in low and high speed acceleration.

George Cambria
Brooklyn, New York
Tuesday, September 20, 2016 - Part E-1987
Good service - and a good product.

Steve Mccully
Norwich, United Kingdom